Hair Transplant After 10 Years

Hair transplants involve a surgical procedure designed to move hair follicles from one part of the body, known as the ‘donor site’, to a balding or thinning area known as the ‘recipient site’. This cosmetic surgery is utilized primarily to treat male pattern baldness but is also suitable for rectifying hair thinning due to various causes.

Types of Hair Transplants

There are two main types of hair transplant techniques:

1. Follicular Unit Transplantation (FUT):
   • This technique involves removing a strip of scalp from the donor site.
   • The scalp is then divided into multiple follicular units, which are transplanted to the recipient site.
2. Follicular Unit Extraction (FUE):
   • Individual hair follicles are extracted directly from the donor site.
   • These follicles are meticulously implanted into the recipient area, minimizing visible scarring.

Procedure Overview

The process typically follows these steps:

1. Consultation:
   • An initial consultation with a hair restoration specialist to evaluate the extent of hair loss and determine the most appropriate method for transplantation.
2. Pre-Surgery Preparations:
   • Health assessments and instructions on how to prepare for the surgery, such as avoiding specific medications or smoking.
3. Surgery:
   • The patient undergoes local anesthesia.
   • Follicles are harvested from the donor area and implanted into the recipient site.
   • Duration ranges from 4 to 8 hours, depending on the technique and the number of follicles transplanted.
4. Post-Surgery Care:
   • Instructions include how to care for the transplanted area and manage any discomfort.
   • Possible medications to prevent infection and facilitate healing are prescribed.

Expected Results

Patients typically notice:

• Initial shedding of transplanted hair within the first few weeks.
• Hair regrowing in the recipient area after approximately three to six months.
• Full results manifesting between 12 to 18 months post-procedure.

Hair transplants are generally successful with high satisfaction rates. However, understanding the process and possible outcomes is crucial for anyone considering this procedure.

Historical Overview of Hair Transplant Techniques

The journey of hair transplant techniques has evolved significantly over the past century. Initially, the medical community had little understanding of hair restoration procedures.

Early Techniques

1. 1930s – Japan:
   • Dr. Shoji Okuda developed a groundbreaking technique in Japan, using punches to extract and insert hair.
   • Though innovative, World War II disrupted the dissemination of his methods.
2. 1950s – United States:
   • Dr. Norman Orentreich popularized hair transplantation in the U.S.
   • His pioneering work demonstrated the concept of “donor dominance,” showing transplanted hair maintained its characteristics.

Advancements in the 1980s and 1990s

1. Micrografting:
   • Surgeons advanced from large-graft techniques to micrografting.
   • This method involved smaller grafts, improving the natural appearance of transplanted hair.
2. Follicular Unit Transplantation (FUT):
   • Introduced in the 1990s, FUT involved transplanting hair in naturally occurring groups called follicular units.
   • This technique significantly reduced the unnatural “plug” look.

Modern Techniques

1. Follicular Unit Extraction (FUE):
   • Developed in the early 2000s, FUE became a cornerstone of modern hair transplantation.
   • Instead of removing a strip of scalp, individual follicular units are extracted and implanted.
   • Benefits include minimal scarring and faster recovery.
2. Robotic Hair Transplants:
   • The introduction of robotic systems such as ARTAS enhanced precision in FUE procedures.
   • Robots assist in the accurate harvesting of hair follicles, reducing human error.
3. Platelet-Rich Plasma (PRP) Therapy:
   • Emerging as an adjunct to hair transplantation, PRP uses the patient’s own platelets to stimulate hair growth.
   • This technique aids in the healing and success rate of transplants.

The continuous advancements reflect the medical community’s dedication to improving outcomes and patient satisfaction in hair restoration. The evolution from crude techniques to refined procedures illustrates the technological and methodological strides made in the field.

Pre-Transplant Consultation: Assessing Candidacy

The pre-transplant consultation is a critical phase where a specialist evaluates the patient’s eligibility for a hair transplant. This process typically involves several essential steps.

Reviewing Medical History

1. Medical Conditions: Evaluation of any chronic illnesses such as diabetes or autoimmune disorders.
2. Medications: Assessment of current medications that may impact the procedure or healing process.
3. Previous Surgeries: Examination of past medical interventions that might affect hair transplant outcomes.

Scalp Examination

1. Hair Density: Measurement of donor hair density and quality.
2. Scalp Health: Inspection for any scalp conditions like dermatitis or psoriasis.
3. Hair Loss Pattern: Determination of the progression and pattern of hair loss, including the Norwood Scale classification.

Diagnostic Tests

1. Blood Tests: Possible blood tests to rule out underlying health conditions.
2. Scalp Biopsy: In rare cases, a small sample taken for further analysis.

Patient Expectations

1. Discussing Goals: Understanding the patient’s desired outcomes.
2. Realistic Outcomes: Setting realistic expectations about the results and recovery.
3. Pattern Projections: Predicting future hair loss to tailor the transplant plan.

Risk Assessment

1. Surgical Risks: Explanation of potential risks such as infection or scarring.
2. Anesthetic Risks: Assessment of any anesthetic-related concerns.
3. Post-Operative Complications: Discussion on possible complications during recovery.

Financial Considerations

1. Cost Breakdown: Detailed overview of costs involved, including surgery, medications, and follow-ups.
2. Payment Plans: Information on available financing options.
3. Insurance Matters: Clarification on what role, if any, insurance may play.

Preparation Guidelines

1. Lifestyle Adjustments: Recommendations on lifestyle changes, like quitting smoking or avoiding certain medications.
2. Pre-Operative Instructions: Detailed guidelines on what to avoid before surgery, such as alcohol or specific foods.
3. Logistics Planning: Scheduling the surgery date and preparing for the recovery period.

The pre-transplant consultation ensures that the candidate is well-informed and adequately prepared, aligning their expectations with achievable outcomes through a comprehensive assessment process.

The Procedure: Step-by-Step

The hair transplant process involves several stages, each critical for optimal results. Understanding these steps can help individuals prepare mentally and physically.

1. Initial Consultation
   • The patient meets with the surgeon.
   • The surgeon assesses the patient’s hair loss.
   • A customized treatment plan is developed.
2. Pre-Operation Preparations
   • Patients receive guidelines for pre-surgery actions.
   • Instructions typically include avoiding certain medications and alcohol.
   • Hair in the donor area is trimmed.
3. Administering Anesthesia
   • Local anesthesia is applied to the donor and recipient areas.
   • Patients remain awake but do not feel pain.
4. Harvesting Hair Follicles
   • Follicular Unit Extraction (FUE) or Follicular Unit Transplantation (FUT) method is used.
   • FUE involves extracting individual hair follicles.
   • FUT involves removing a strip of scalp.
5. Preparing the Follicles
   • Extracted follicles are examined and prepared.
   • Only the healthiest follicles are selected for transplantation.
6. Creating Recipient Sites
   • Tiny incisions are made in the recipient area.
   • The surgeon determines the pattern and direction for natural growth.
7. Implanting Hair Follicles
   • Prepared hair follicles are implanted into the incisions.
   • Precision ensures a natural look and density.
8. Post-Operation Care
   • Bandages may be applied.
   • Patients receive instructions for aftercare.
   • Medication for pain and swelling is prescribed.
9. Recovery Period
   • Initial recovery takes a few days to a week.
   • Follow-up appointments are scheduled.
   • Detailed guidelines are given for washing and caring for the scalp.
10. Long-Term Care
    • Continued attention to scalp hygiene is necessary.
    • Periodic check-ups assess transplant success and scalp health.
    • Nutritional and lifestyle advice may be provided.

The procedure’s meticulous nature underscores its efficacy in addressing hair loss. Each step is vital for achieving the desired outcome and ensuring patient satisfaction.

Post-Operative Care and Early Recovery

In the immediate aftermath of a hair transplant, meticulous post-operative care is pivotal for optimal results. Patients may notice minor swelling, redness, or scabbing around the transplanted areas, all of which are normal and generally subside within a few days.

Instructions for Care

Patients should adhere to specific instructions provided by their healthcare provider, including:

1. Medication: Use prescribed antibiotics and anti-inflammatory medications to minimize the risk of infection and reduce swelling.
2. Gentle Washing: Clean the scalp with a gentle shampoo as directed. Typically, patients should avoid washing the scalp for the first 48 hours.
3. Avoiding Physical Strain: Refrain from strenuous activities or heavy lifting for at least one week post-surgery.
4. Protective Measures: Use a loose-fitting cap to protect the scalp from direct sunlight and dust.

Monitoring Healing

Patients should inspect the treated area regularly for signs of complications such as excessive swelling, unusual discharge, or persistent itching.

• Swelling: Minor swelling is typical but should not be severe.
• Redness: Some redness is normal; however, it should diminish gradually.
• Scabbing and Shedding: Small scabs may form and eventually shed within 10-14 days. The newly transplanted hair will go through a shedding phase before regrowth begins.

Compliance with Follow-Up Appointments

• Regular follow-up appointments with the surgeon are crucial to monitor progress.
• The surgeon may perform a series of evaluations to ensure the transplanted grafts are taking hold and the scalp is healing adequately.
• Adjustments to medication or care routines might be suggested based on the recovery trajectory.

Lifestyle Adjustments

• Diet and Hydration: Maintaining a balanced diet and staying hydrated can support healing.
• Smoking and Alcohol: Patients are advised to avoid smoking and limit alcohol consumption to enhance circulation and facilitate recovery.

By following these guidelines, patients can significantly contribute to a smooth recovery process and maximize the success of their hair transplants, leading to more satisfactory long-term outcomes.

First-Year Results: What to Expect

In the initial year following a hair transplant, patients may experience a range of anticipated outcomes and stages of hair growth. It is crucial to understand these expectations to assess the success and progression of the procedure correctly.

Months 1-3

• Shedding Phase: It is common for transplanted hair to shed within the first few weeks post-surgery. This phenomenon, known as “shock loss,” is temporary.
• Scalp Healing: The donor area and transplanted sites will begin to heal. Patients will notice scabbing, redness, and potential itching. Proper wound care is essential.
• Minimal Growth: Hair growth in the transplanted area is minimal during this period as follicles enter a dormant phase.

Months 4-6

• Initial Growth: Around the fourth month, new hair will start to emerge. This hair is typically fine and lighter in color than the existing strands.
• Texture and Volume: Gradually, the transplanted hair will thicken and lay flat, appearing more natural over time.

Months 7-9

• Enhanced Coverage: There will be noticeable improvements in hair density. Patients can expect the growth to become more consistent and hairs to darken.
• Continued Growth: The rate of growth increases, and hair shafts strengthen, providing a more natural and appealing look.

Months 10-12

• Significant Density: By the end of the first year, a substantial amount of the transplanted hair will have grown. Most individuals see about 60-70% of the full result.
• Mature Hair: The texture and thickness of the new hair will resemble that of the natural hair in the surrounding areas.
• Assessing Results: This period is an excellent time to assess the effectiveness of the procedure. Any additional touch-up sessions can be planned if needed.

Patients should maintain realistic expectations and understand that final results are usually observed after 12-18 months. Throughout this period, adherence to post-operative care instructions and follow-up appointments with the healthcare provider play a critical role in achieving optimal outcomes.

Five-Year Milestones in Hair Transplant Growth

Within the span of five years post-hair transplant, patients can expect significant milestones that underscore the success of their procedure. These milestones serve as indicators of the ongoing development and adaptation of transplanted hair.

Initial Growth Phase (0-12 months)

During the initial growth phase, which extends over the first 12 months, patients typically experience:

• Hair Shedding: The transplanted hair may initially shed within the first two to three weeks.
• Early Regrowth: Noticeable hair regrowth begins around the three-month mark.
• Texture Changes: Hair may initially regrow with a finer texture that gradually thickens.

Consolidation Phase (12-24 months)

By the end of the second year, patients often see:

• Increased Density: The density of transplanted hair becomes more appreciable.
• Maturation of Hair Texture: The hair strands attain a more natural and mature texture.
• Full Coverage: Most patients achieve full coverage and can style their hair more freely.

Stabilization Phase (24-36 months)

Moving into the third year, the stabilization phase often brings:

• Established Growth Cycle: Transplanted hair enters a regular growth cycle similar to native hair.
• Consistency in Growth: Patients observe consistent hair growth without significant changes in density.
• Natural Appearance: The hair looks and feels completely natural, matching the characteristics of existing hair.

Long-Term Sustainability (36-60 months)

During the fourth and fifth years, the long-term sustainability of the transplanted hair becomes apparent, characterized by:

• Durability: Transplanted hair remains durable and resilient.
• Minimal Maintenance: Patients require minimal maintenance beyond regular hair care routines.
• Continued Satisfaction: High levels of patient satisfaction as the results are long-lasting and permanent.

This five-year timeframe represents a journey where gradual but significant changes lead to a satisfying and natural-looking head of hair that withstands the test of time.

A Decade Later: Long-Term Outcomes and Patient Satisfaction

Ten years post-hair transplant, several crucial aspects come into focus, providing a comprehensive understanding of both long-term outcomes and patient satisfaction.

Hair Growth and Density

Patients often experience sustained hair growth with notable density. Although individual results vary:

• Continuous Hair Growth: The transplanted hair generally continues to grow as normal hair.
• Density Fluctuations: Some might notice slight changes in density due to natural aging processes.

Scalp Health and Maintenance

Ongoing scalp health is a significant consideration:

• Regular Checkups: Periodic visits to the dermatologist help maintain scalp health.
• Maintenance Treatments: Some might require additional treatments, such as platelet-rich plasma (PRP) to boost hair health.

Aesthetic Results

Aesthetic outcomes tend to remain favorable, contributing positively to overall appearance:

• Natural Look: The transplanted hair typically retains a natural look, blending seamlessly with existing hair.
• Styling Possibilities: Patients often enjoy the flexibility to style their hair, enhancing personal satisfaction.

Psychological and Social Impact

Long-term psychological and social benefits are frequently reported:

• Improved Self-Esteem: Many patients experience a boost in self-esteem and confidence.
• Enhanced Social Interactions: Improved appearance can lead to more positive social interactions and opportunities.

Financial Considerations

From a financial perspective, the investments are gauged differently after a decade:

• Initial Costs: Reflect long-term benefits, often justifying initial expenses.
• Future Treatments: Potential costs for additional maintenance treatments depend on individual needs.

Patient Satisfaction

Overall patient satisfaction remains high:

• Expectation Management: Satisfaction correlates with realistic preoperative expectations.
• Loyal Patient Base: Satisfied patients often become advocates for the procedure, referring others.

Clinical Perspectives

Clinicians emphasize the importance of:

• Tailored Approaches: Recognizing the need for personalized treatment plans.
• Technological Advancements: Continued advancements in transplantation techniques ensure better outcomes.

In summary, long-term outcomes and patient satisfaction indicate a generally positive trend, with patients typically benefitting from improved aesthetics, enhanced self-esteem, and sustained hair growth over a decade.

Factors Influencing Long-Term Success

Understanding the factors influencing the long-term success of hair transplants is crucial for ensuring satisfactory and enduring results. The longevity of transplanted hair and overall patient satisfaction depend on several key elements:

• Surgeon Expertise: The skill and experience of the surgeon play a pivotal role. Qualified surgeons are adept at using advanced techniques, minimizing trauma to the scalp, and ensuring optimal graft survival.
• Donor Hair Quality: The quality of donor hair significantly affects outcomes. Healthy, dense hair in the donor area enhances graft viability and aesthetic results.
• Patient Health: A patient’s overall health and lifestyle choices impact the durability of the transplant. Factors such as smoking, diet, and stress levels can influence hair health and growth.
• Post-Surgical Care: Adherence to post-operative instructions is vital. Proper care, including gentle washing, avoiding harsh chemicals, and following prescribed medications, supports healing and hair growth.
• Technique Used: Techniques like Follicular Unit Extraction (FUE) and Follicular Unit Transplantation (FUT) differ in approach and outcomes. The choice of technique should align with the patient’s specific needs and scalp condition.
• Genetics: Genetic predisposition to hair loss continues to be a factor. Transplanted hair may retain susceptibility to the genetic influences that caused original hair loss.
• Age: Age influences healing and hair growth patterns. Younger patients may experience different long-term results compared to older individuals.
• Scalp Condition: The health and condition of the scalp before and after surgery affect hair transplant success. Conditions like dandruff or dermatitis need to be managed to optimize outcomes.
• Consistency in Treatment: Regular follow-ups with the surgeon ensure any issues are promptly addressed. Consistent use of treatments like Minoxidil and Finasteride can help maintain transplanted hair health.

Each of these components necessitates careful consideration and management to maximize the benefits of a hair transplant and ensure that expectations are met in the long term.

The Role of Technological Advancements in Hair Transplants

Technological advancements have significantly revolutionized the field of hair transplants over the past decade. Surgeons and patients alike have benefited from state-of-the-art tools and techniques that increase the success rates and overall efficacy of hair transplants.

Advanced Techniques

1. Follicular Unit Extraction (FUE):
   • Minimally invasive.
   • Leaves minimal scarring.
   • Short recovery time.
2. Robotic Hair Transplant Systems:
   • High precision.
   • Consistent results.
   • Reduces human error.
3. Platelet-Rich Plasma (PRP) Therapy:
   • Promotes faster healing.
   • Increases graft survival rate.
   • Enhances overall hair density.

Improvements in Surgical Tools

1. Precision Instruments:
   • Microneedles for graft extraction.
   • Advanced implanters for accurate placement.
2. High-Resolution Imaging:
   • Enhanced visualization.
   • Better planning and execution.

Post-Operative Care Technologies

1. Laser Therapy:
   • Stimulates hair growth.
   • Reduces inflammation.
   • Accelerates healing.
2. Artificial Intelligence (AI):
   • Personalized post-operative care.
   • Monitors graft health.
   • Alerts for potential issues.

Role of Digital Platforms

1. Consultation Platforms:
   • Virtual consultations.
   • Remote monitoring and follow-ups.
2. Patient Education:
   • Digital resources on procedure and care.
   • Interactive videos and guides.

Genetic and Molecular Research

1. Genetic Profiling:
   • Personalized treatment plans.
   • Predicts graft success.
2. Stem Cell Research:
   • Potential future treatments.
   • Regenerates hair follicles.

Enhanced Safety Protocols

1. Hygiene Standards:
   • Reduced risk of infections.
   • Ensures sterile environment.
2. Pre-Screening:
   • Comprehensive patient assessments.

Technological advancements have undeniably improved the landscape of hair transplants, offering more efficient, effective, and safer options. Consequently, patients experience stronger, more natural-looking hair growth and maintain long-term results.

Potential Complications and How They Are Managed

Despite the high success rate of hair transplants, potential complications can still arise even a decade after the procedure. It is critical to understand these complications and how they are typically managed.

• Scarring: Even with advanced techniques, scarring can occur. It usually manifests as small, often barely visible scars on the donor site. If extensive scarring develops, options include laser therapy, microneedling, or surgical revision.
• Hair Thinning: Over time, transplanted hair may thin, similar to natural hair. This thinning is generally managed through medical treatments such as minoxidil and finasteride or further hair transplant sessions to maintain density.
• Infection: Although rare, infection at the donor or recipient site can occur. Signs include redness, swelling, and oozing. Infections are managed with antibiotics and proper wound care. Regular follow-ups can help detect and treat infections promptly.
• Cysts: Small cysts may form around the transplanted hair follicles. These cysts are usually harmless and can be treated with minor surgical procedures or drained by a healthcare professional.
• Ingrown Hairs: An occasional ingrown hair can develop, causing discomfort and inflammation. Ingrown hairs are managed by gently exfoliating the scalp and, in some cases, minor surgical intervention to release the trapped hair.
• Shock Loss: The phenomenon of shock loss, where transplanted hairs fall out after surgery, can happen but is generally temporary. Management includes patience, as hair typically regrows within three to six months, but medications like minoxidil can be used to stimulate growth.
• Unnatural Appearance: If the hair transplant was not performed correctly, it might look unnatural. This issue can be managed with corrective surgeries or aesthetic treatments to improve the appearance.
• Continued Hair Loss: Some patients continue to lose natural hair after a transplant, necessitating additional treatments. Options include further hair transplants, medication, or lifestyle adjustments to slow hair loss progression.

Consistent post-operative care, including use of prescribed medications, attending follow-up visits, and maintaining overall scalp health, is critical in managing these complications effectively.

Comparing Hair Transplants to Other Hair Restoration Methods

When considering hair restoration options, it’s important to understand the differences between hair transplants and other methods. Here’s a comparison to help make an informed decision.

Non-Surgical Options

1. Topical Treatments
   • Minoxidil: Applied directly to the scalp, minoxidil helps increase hair growth and slows balding.
   • Advantages: Non-invasive, easy to use, and widely available.
   • Disadvantages: Effects are temporary; hair loss resumes if usage is stopped.
2. Oral Medications
   • Finasteride: This prescription medication is taken orally and helps to reduce hair loss.
   • Advantages: Convenience of oral intake, effective in many men.
   • Disadvantages: Potential side effects such as decreased libido; not effective in women.
3. Laser Therapy
   • Low-Level Laser Therapy (LLLT): Uses light energy to stimulate hair follicles.
   • Advantages: Non-invasive, can be done at home or in a clinic.
   • Disadvantages: Requires ongoing sessions; effectiveness varies among individuals.

Surgical Options

1. Hair Transplants
   • Follicular Unit Transplantation (FUT) and Follicular Unit Extraction (FUE): Both involve transplanting hair follicles from a dense area to a balding area.
   • Advantages: Permanent results, natural-looking hair growth.
   • Disadvantages: Surgical risks, longer recovery time, higher cost.
2. Scalp Reduction
   • Procedure: Removing scalp areas with hair loss and stretching areas with hair over these sections.
   • Advantages: Immediate reduction in bald areas.
   • Disadvantages: Surgical risks, possibility of scalp tightness, not suitable for all patients.

Cosmetic Options

1. Hairpieces and Wigs
   • Hairpieces: Custom-made or off-the-shelf options to cover balding areas.
   • Advantages: Instant results, non-surgical.
   • Disadvantages: Requires maintenance, potential for noticeable appearance differences.
2. Scalp Micropigmentation (SMP)
   • Procedure: Tattoos tiny dots on the scalp to mimic hair follicles.
   • Advantages: Non-invasive, low maintenance.
   • Disadvantages: Does not provide actual hair growth, semi-permanent.

Effectiveness and Long-Term Outcomes

• Durability: Hair transplants offer long-term solutions compared to temporary topical treatments or hairpieces.
• Cost: Non-surgical treatments are typically more affordable initially but may incur continuous costs.
• Maintenance: Surgical options like hair transplants and scalp reduction require less ongoing maintenance than wigs or medications.

A thorough evaluation of each method’s pros and cons helps in deciding the best approach to hair restoration.

Future Trends in Hair Restoration

In the rapidly evolving field of hair restoration, technological advancements are poised to create significant shifts in treatment protocols and results over the next decade. Key trends that are expected to influence the landscape include:

1. Stem Cell Therapy:
   • Research on stem cells has shown promising potential for stimulating hair growth. Techniques involving the transplantation of hair follicle stem cells could offer more effective and less invasive solutions.
   • Clinical trials are ongoing, and substantial progress is anticipated.
2. Robotic-Assisted Surgery:
   • Automation and robotics are enhancing precision in hair transplant procedures. Robotic systems can improve the accuracy of follicular unit extraction (FUE) and transplantation, leading to more consistent and natural-looking results.
   • These tools also reduce surgery time, increasing efficiency and patient comfort.
3. 3D Printing:
   • The integration of 3D printing technology into hair restoration is an emerging trend. Custom-made hair follicles created using 3D printers may become a breakthrough in personalized treatment.
   • This technology could potentially eliminate the need for a donor area, expanding options for individuals with advanced hair loss.
4. Platelet-Rich Plasma (PRP) Therapy Enhancements:
   • PRP therapy uses components of the patient’s blood to promote hair growth. Innovations in this area, including higher concentration techniques and combination treatments with other therapies, are expected to enhance efficacy.
   • PRP might become a standard supplementary procedure in hair restoration.
5. Genetic and Pharmacological Advances:
   • Advances in genetic research are identifying new targets for pharmacological intervention. Treatments tailored to an individual’s genetic makeup could improve outcomes significantly.
   • New drugs and topical solutions in development are showing promise in both preventing and reversing hair loss.
6. Microneedling Techniques:
   • Microneedling is gaining popularity due to its effectiveness in stimulating hair growth by promoting collagen production and increasing the absorption of therapeutic products.
   • Future trends include combining microneedling with growth factors and other biologics to enhance results.
7. Non-Invasive Laser Treatments:
   • Low-level laser therapy (LLLT) is becoming a preferred non-invasive option. New laser devices with improved wavelengths and power settings are being developed to maximize hair regrowth.
   • The portability and ease of use of these devices make them a convenient option for continuous treatment.

As technology progresses, the field of hair restoration will likely offer more diverse and effective treatment options, providing hope and improved solutions for individuals experiencing hair loss.