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Changing the environment around stem cells could help tissue repair, but it's hard to be precise and avoid side effects.

The enzyme steroid sulfatase is linked to breast cancer and other conditions, and inhibitors are being developed for treatment.

Natural products in cosmetics are beneficial for skin and hair care with low toxicity.

Dehydroepiandrosterone (DHEA) is a prohormone important for producing sex steroids and has potential health benefits.

The conclusion is that certain cell interactions and signals are crucial for hair growth and regeneration.

Chitin and chitosan are useful in cosmetics for oral care, haircare, and skincare, including UV protection and strength improvement.

Stem cells are crucial for skin repair and new treatments for chronic wounds.

The document concludes that the 5 alpha-reductase enzymes are important in steroid metabolism and related to various human diseases, with inhibitors used to treat conditions like male pattern baldness and prostate issues.

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

Chitosan nanofiber scaffolds improve skin healing and are promising for wound treatment.

The document concludes that adenosine receptor agonists have potential for treating various conditions, but only a few are approved due to challenges like side effects and the need for selective activation.

Estrogen loss during menopause worsens skin health, but hormone replacement therapy may improve it, though more research is needed.

The conclusion is that PCOS is caused by ovarian sensitivity to hormones and disrupted hormone control, possibly due to ovarian factors, and more research is needed.

Nanoparticles can improve skin drug delivery but have challenges like toxicity and stability that need more research.

TRP channels in the skin are important for sensation and health, and targeting them could help treat skin disorders.

Tiny particles from stem cells help activate hair growth cells and encourage hair growth in mice without being toxic.

Skin surface lipids are important for skin health and altering them could help prevent aging and treat skin conditions.

The document concludes that better biomarkers are needed to detect long-term oral testosterone use in athletes.

Fullerenes show potential in skin care but need more safety research.

Scientists turned mouse stem cells into skin cells that can grow into skin layers and structures.

Hormonal treatments, including birth control and antiandrogens, can effectively treat acne in women.

Iranian veterans exposed to sulfur mustard suffer from long-term skin itching and eye damage, with some risk of skin cancer and ongoing management challenges.

Ozone reacts more with unwashed hair, producing compounds due to scalp oils, which could lower ozone exposure but increase exposure to reaction products.

The circadian clock is crucial for tissue renewal and regeneration, affecting stem cell functions and having implications for health and disease.

Polygonum multiflorum extract helps grow hair by activating certain hair growth signals in mice.

Vitiligo is linked to autoimmune diseases and hearing issues, so hearing tests are recommended for patients.

Skin development in mammals is controlled by key proteins and signals from underlying cells, involving stem cells for maintenance and repair.

Platelet-rich plasma may help in skin and hair treatments, and with muscle and joint healing, but more research is needed to fully understand its benefits and limitations.

Finasteride is a safe, effective treatment for hirsutism with fewer side effects.

Ganoderma lucidum, a type of mushroom, may help treat enlarged prostate by blocking testosterone conversion.