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Hair is a complex organ, and understanding its detailed structure and growth phases is crucial for analyzing substances within it.

c-kit affects hair growth and color in alopecia areata and androgenetic alopecia.

Topical Valproate is safe for human skin and unlikely to cause irritation.

Fat under the skin releases HGF which helps hair grow and gain color.

Some chemicals can permanently or temporarily remove color from skin and hair, which can be distressing and is not well-regulated in cosmetics.

Regenerated hairs can regain their color if the wound occurs during a certain stage of hair growth, and this process is helped by specific skin cells and proteins.

Most patients with dark skin were satisfied with laser hair removal and had few complications.

The skin's layers protect, sense, and regulate the body's internal balance, but can be prone to cancer.

The document suggests using natural remedies like bloodletting and honey for various health issues but lacks scientific evidence for their effectiveness.

Rabbit skin with active hair growth shows thicker, redder areas due to larger, more numerous hair follicles and increased blood vessels.

Microneedles improve drug delivery in various body parts, are safe and painless, and show promise in cosmetology, vaccination, insulin delivery, and other medical applications.

TGF-alpha is present in sheep and ferret skin and may affect hair growth without directly stimulating cell proliferation.

Nanocarrier-loaded gels improve drug delivery for cancer, skin conditions, and hair loss.

The Brazilian Society of Dermatology agrees that oral isotretinoin is effective for acne and other skin conditions, and it's safe when monitored, but more research is needed on dosing and duration.

Age, smoking, and lower BMI increase facial wrinkles; men wrinkle more than women, except in old age; pale skin and certain hormonal factors can protect against wrinkles.

EPR spectroscopy showed that spontaneous hair growth results in thicker skin and less pigmented hair than depilation-induced growth.

Hair color is determined by different melanins and changes with age.

Blood-derived CD34+ cells speed up healing, reduce scarring, and regrow hair in skin wounds.

Stephen Rothman made important discoveries in dermatology, including the use of PABA in sunscreens, but never profited from his work.

Visible light can damage skin and most sunscreens don't block it well; more research is needed on its effects and protection methods.

Carboxytherapy is a safe and effective treatment for improving skin appearance and treating various skin conditions, with mild side effects.

Hard skin features like scales, feathers, and hair evolved through specific protein changes in different animal groups.

Biotin supplementation during isotretinoin treatment for acne may help maintain skin hydration and improve hair growth.

Taking triterpenoids from Ganoderma lucidum over a long time can help slow down brain aging and improve overall health in mice.

The home-use IPL device effectively reduced hair and delayed its regrowth after six months of use, with users happy and no negative side effects.

Dermoscopy can help assess the severity of chronic radiation-induced skin damage in head and neck cancer patients.

Cilostazol helps hair grow by making hair root cells grow faster and changing growth factor levels.

Women of color in Northern Manhattan view hair care as important to their identity and culture, and education on harmful chemicals in hair products is needed.

Acne is the most common skin problem in Brazil, with a need for improved dermatological care and health education, especially for the public sector and black-skinned individuals.

The new minoxidil gel reduces runoff and improves eyebrow hair growth.