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Human skin produces sex hormones like estrogen and testosterone, influenced by ARO and StAR, which may affect skin elasticity and hair growth.

The effects of estrogen on human scalp hair growth are unclear and need more research.

Human hair follicle stem cells can turn into multiple cell types but lose some of this ability after being grown in the lab for a long time.

The "Two-Cell Assemblage" assay is a new, simple method to identify substances that may promote hair growth.

Using tissue expanders with galeotomies for post-burn alopecia is faster and has fewer complications.

Gray hair may be caused by lower antioxidant activity in hair cells.

PGD2 stops hair growth and is higher in bald men with AGA.

The model suggests that scalp tension could lead to hair loss, with factors like blood vessel hardening, enlarged oil glands, and poor microcirculation also playing a role. It also hints at a possible link between skull shape and baldness pattern.

The document concludes that skin-derived precursors can be grown and may help in hair growth and skin repair.

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.

Tramadol and THC-COOH can be detected in hair for several months after stopping use.

Injecting lab-grown hair cells into the scalp can regrow hair.

A protein called HIF-1a helps control hair growth genes and could be targeted to treat hair loss.

A new peptide, murikal/SPR4, was found to significantly increase hair growth in mice, and its liposomal topical formulations enhanced hair growth more than commercial products. However, results on human scalp skin were unclear, needing more tests.

Prolactin contributes to hair loss by promoting hair follicle shrinkage and cell death.

The study found new details about human hair growth and suggests that preventing a specific biological pathway could potentially treat hair graying.

Human scalp fat stem cells showed improved cartilage-like development on a special scaffold with freeze-thaw treatment.

Certain genes are more active in baby scalp cells and can help grow hair when added to adult mouse skin cells.

The conclusion is that exogen is a unique hair cycle phase and the new sampling method specifically targets this stage, which may help in future hair loss research.

Beard and scalp hair cells have different gene expressions, which may affect beard growth characteristics.

Scientists developed a method to grow human fetal skin and digits in a lab for 3-4 weeks, which could help study skin features and understand genetic interactions in tissue formation.

Telocytes in the scalp may help with skin regeneration and maintenance.

mTORC1 activity is important for hair growth and color, and targeting it could help treat hair loss and greying.

Autophagy is important for human hair growth and health.

Minoxidil promotes hair growth but exact mechanism is unknown.

Researchers developed a quick and easy way to get and grow cells from the base of human hair follicles.

Dopamine stops hair growth and pigment production in human scalp hair follicles.

The proteins transthyretin and megalin are more present in the growth phase of hair, suggesting they might affect hair health and growth.

RU58841 significantly increases hair growth rate and initiates more hair cycles, but doesn't affect hair thickness, suggesting it could be a new treatment for baldness.