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Environmental factors like temperature and nutrition affect hair growth, with humans showing seasonal hair growth differences.

The essential oil from Chamaecyparis lawsoniana has strong antibacterial and antifungal effects, especially against yeast and Gram-positive bacteria.

Topical estrogen treatments did not change hair growth in certain mouse strains, questioning previous findings on their role in hair growth control.

The document concludes that hair biology is complex and there are still unanswered questions about hair loss and follicle changes.

Estrogen receptors may not affect mouse hair growth as previously thought, and oxybenzone in sunscreen is stable in sunlight.

KLF4 is important for maintaining stem cells and has potential in cancer treatment and wound healing.

Acne in dark skin is influenced by environmental factors and can lead to hyperpigmentation, with various treatment options available.

Finasteride is not expected to be effective for treating Acne vulgaris.

Two major dermatology conferences were held in 2006, focusing on skin immunity and various skin diseases.

The document corrects a mistake by stating that pimecrolimus, not tacrolimus, is the drug that concentrates in the skin.

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

Hair follicle biology advancements may lead to better hair growth disorder treatments.

MicroRNAs are crucial in controlling cell signaling, affecting cancer and tissue regeneration.

Finasteride safely and effectively treats male pattern hair loss, but may cause reversible sexual issues and harm male fetuses.

The Rotterdam Study found risk factors for elderly diseases, links between lifestyle and genetics with health conditions, and aimed to explore new areas like DNA methylation and sensory input effects on brain function.

Microspheres about 1.5 micrometers in size can best penetrate hair follicles, potentially reaching important stem cells.

The document concludes that the understanding of scar formation is incomplete and current prevention and treatment for hypertrophic scars and keloids are not fully effective.

Human skin makes sexual hormones that affect hair growth, skin health, and healing; too much can cause acne and hair loss, while treatments can manage these conditions.

Alopecia areata, a common autoimmune hair loss condition, often runs in families.

Epithelial-mesenchymal interactions control hair growth cycles through specific molecular signals.

Mutations in the SRD5A3 gene cause a new type of glycosylation disorder by blocking the production of a molecule necessary for protein glycosylation.

Human skin can make serotonin and melatonin.

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

The document concludes that understanding hair follicle biology can lead to better hair loss treatments.

Melatonin is important for skin health and protection, and can be made by the skin or applied to it.

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.

Hair color production in mice is closely linked to the hair growth phase and may also influence hair growth itself.

Use minoxidil for hair loss; finasteride and dutasteride for men, dutasteride for women.

The ZIP7 gene helps control zinc levels in cells by moving zinc from the Golgi apparatus to the cytoplasm.

Minoxidil boosts growth factor in hair cells, potentially promoting hair growth.