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Hair color is determined by melanin produced and transferred in hair follicles.

P-cadherin is crucial for hair follicle pigmentation but not skin pigmentation.

Platelet-rich plasma (PRP) is effective in treating various skin conditions and improving hair density, thickness, and patient satisfaction, with lower relapse rates for Alopecia Areata.

Laser therapy on darker skin has higher risks and needs expert handling.

Laser hair removal is popular for long-term hair reduction but carries risks, requiring well-trained operators and better regulations, especially in South Africa.

High mTORC1 activity slows hair growth and causes it to lose color.

Removing Dicer from pigment cells in newborn mice causes early hair graying and changes in cell migration molecules.

Taking Vitamin D supplements may increase the risk of skin darkening after laser hair removal.

Microneedling combined with other treatments significantly improves hair growth in people with hair loss and is safe.

Imiquimod can cause rare skin side effects, some irreversible, and long-term follow-up is important for users.

Minoxidil and Finasteride are effective for male baldness; more research is needed for hair aging treatments.

Polydopamine is a safe, effective, and permanent hair dye that turns gray hair black in one hour.

CD34+ and CD34- melanocyte stem cells have different regenerative abilities.

Blocking a protein called CXXC5 with a specific peptide can stimulate hair regrowth and new hair growth in wounds.

Microneedles can cause side effects like infection and allergic reactions, and precautions like test spots and sunscreen are recommended.

Improved understanding of stem cell mechanisms can enhance skin tissue engineering.

Hair follicles could be used to noninvasively monitor our body's internal clock and help identify risks for related diseases.

Understanding hair growth involves complex factors, and more research is needed to improve treatments for hair loss conditions.

Microneedling helps with hair loss, especially with 5% minoxidil, but more high-quality research is needed.

Platelet-rich plasma (PRP) shows promise in skin and hair treatments but results vary with preparation methods.

Light affects skin health, aging, and cancer risk, and new light-based treatments and imaging are promising for skin care.

The human scalp hair bulb contains different types of melanocytes with varying abilities to produce melanin.

People with alopecia have shorter hair follicles and more c-kit, a stem cell factor receptor, which could predict how the condition progresses.

Scalp cooling is the most effective FDA-approved method to prevent chemotherapy-induced hair loss, but more research is needed for other treatments.

Hair follicles and deer antlers regenerate similarly through stem cells and are influenced by hormones and growth factors.

Bimatoprost is a safe and effective treatment for making eyelashes longer, thicker, and darker.

Most HIV patients develop skin symptoms that can indicate the stage of their disease.

Gene regulation could revolutionize hair color by altering pigmentation from within.

Creating a supportive environment is crucial for repairing heart tissue without using actual heart cells.

Spironolactone helped reduce excessive facial hair in a woman with porphyria cutanea tarda.