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The vitamin D receptor is essential for skin stem cells to grow, move, and become different cell types needed for skin healing.

Substance P may worsen acne by increasing inflammation, but corticosteroids might help by reducing this effect.

Manatee whiskers are specially adapted for touch in water.

Seborrhea in Parkinson's disease may be linked to hormones, not autonomic impairment.

Minoxidil decreases LH expression, while hydralazine has mixed effects on prolyl and lysyl hydroxylase activities.

Hormone imbalances can cause specific skin changes, which may help in early detection of endocrine disorders.

Some natural compounds may help overcome drug resistance in certain cancers, but more research is needed.

Dendrobium officinale polysaccharides may help with hair growth, skin moisturization, and protection against oxidative damage.

Hair loss treatments work better with lifestyle changes.

LLLT promotes hair growth and improves hair density safely in men and women.

Too much AKR1C3 enzyme causes resistance to finasteride by increasing testosterone.

Topical immunotherapy, especially with DPCP, is effective for treating severe alopecia areata.

Dutasteride effectively treats enlarged prostate, reduces prostate cancer risk, and promotes hair regrowth with few side effects.

Intense pulsed light (IPL) is an efficient and safe method for hair removal, reducing hair by about 80%.

Fractional laser resurfacing is effective and safe for skin treatment, with benefits like less downtime and a low risk of adverse events.

Hair breakage may be an early sign of a hair loss condition called CCCA in African American women.

The best way to extract saponins from Eclipta prostrasta is using 70% ethanol, at 70°C for 3 hours with a 14:1 liquid to solid ratio.

Scarring alopecias are complex hair loss disorders that require early treatment to prevent permanent hair loss.

Mutations in the PTPRQ gene cause significant balance issues in mice due to hair bundle defects in the inner ear.

Thyroid hormone affects skin health, with too little causing rough, pale skin and too much leading to smooth, thin skin, and may also impact wound healing and skin conditions.

Nano-sized plant-based chemicals could improve cervical cancer treatment by being more effective and causing fewer side effects than current methods.

Advancements in creating skin grafts with biomaterials and stem cells are promising, but more research is needed for clinical application.

The article concludes that advancements in hair cosmetics require dermatologists to stay informed about products and their potential risks, including allergies and higher risks for hairdressers.

Low-level laser treatment helped rats regrow hair faster after chemotherapy.

Inhibitors of 11β-HSD1 show potential for treating type 2 diabetes but require more testing for safety and effectiveness.

Melanocyte precursors in human fetal skin follow a specific migration pattern and some remain in the skin's deeper layers.

Microneedle arrays with nanotechnology show promise for painless drug delivery through the skin but need more research on safety and effectiveness.

Fat cells are important for tissue repair and stem cell support in various body parts.

Nanotechnology improves hair care products by enhancing ingredient stability, targeting treatment, and reducing side effects, but more research on its toxicity is needed.

Nonablative radiofrequency treatments, especially microneedle and fractional types, can improve acne scars by 25%–75% after 3-4 sessions, with full results in 3 months and some side effects.