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Oral retinoids are effective for treating severe skin disorders but have reversible side effects and risks for pregnant women.

Hair follicles are valuable for regenerative medicine and wound healing.

Hair follicles on the scalp interact with and respond to the nervous system, influencing their own behavior and growth.

Alopecia areata is an autoimmune hair loss condition treated with corticosteroids, and histologic confirmation is the best diagnosis method.

Scalp flaps are stiffer than skin from other body areas, which helps in planning reconstructive and cosmetic head surgeries.

Commercial hair loss websites promote Propecia by making men feel insecure about baldness and suggesting it's a medical issue needing treatment.

New drugs for heart disease may be developed from molecules secreted by stem cells.

Scalp hair grows at 0.37 mm/day, forearm hair at 0.18 mm/day, and thigh hair at 0.30 mm/day, with no significant differences found in people with certain hair conditions.

Some treatments like methotrexate with prednisone might help juvenile morphea, but more research is needed to confirm.

Microneedle technology is beneficial for drug delivery and could make vaccinations cheaper and more accessible.

The document concludes that understanding how adult stem and progenitor cells move is crucial for tissue repair and developing cell therapies.

Permanent hair removal is hard, but using longer laser pulses at lower power might improve results.

In Japan, sex reassignment surgery for gender identity disorder faces challenges and needs better medical support and education.

Keratinocytes help keep hair follicle cells and skin cells separate in 3D cultures, which is important for hair growth research.

Cell therapy shows promise for treating severe psoriasis but needs more research to confirm safety and effectiveness.

Polygonum multiflorum extract helps hair grow longer and fights the effects of hormones that cause hair loss.

Laser hair removal is effective for dark hair but needs improvement for nonpigmented or fine hairs.

Silastic-Dacron strips effectively prevent stretch-back after hair reduction surgeries.

New materials help control stem cell growth and specialization for medical applications.

Diazoxide applied to the skin can increase hair growth without harmful side effects.

Carboxytherapy can improve skin conditions with few side effects, but results may vary and are not guaranteed.

Hair restoration surgery has improved with better techniques for natural looks and managing patient expectations, but it remains labor-intensive and requires careful consideration of potential complications.

ECM-inspired wound dressings can help heal chronic wounds by controlling macrophage activity.

Topical L-thyroxine may help with wound healing and hair growth but should be used short-term due to potential risks.

Nanotechnology is improving drug delivery and targeting, with promising applications in cancer treatment, gene therapy, and cosmetics, but challenges remain in ensuring precise delivery and safety.

LED light therapy is effective for skin and hair treatments but requires careful use to minimize risks.

Human hair keratins can form stable nanofiber networks that might help in tissue regeneration.

The document concludes that the immune-inhibitory environment of the hair follicle may prevent melanoma development.

MSC-Exos can aid organ development and offer therapeutic benefits for various conditions.

Platelet-rich plasma may improve vitiligo treatment when used with phototherapy.