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Androgens increase a growth factor in hair cells by creating reactive oxygen species, and antioxidants might help treat hair loss.

Estrogens generally inhibit hair growth and improve skin quality, but their exact effects on hair follicles are complex and not fully understood.

Retinoic acid production and signaling in hair follicles are regulated by location and timing, affecting hair growth and cycling.

Ephrins slow down skin and hair follicle cell growth.

Steroids, particularly estrogens and 5α-reductase inhibitors, affect blood vessel-related hair growth processes in hair follicle cells.

Leptin helps start the growth phase of hair.

Hair follicle bulge cells don't help skin regrow after glucocorticoid damage; interfollicular epidermis cells do.

Aging scalp skin contributes to hair aging and loss, and more research is needed to develop better hair loss treatments.

Chemotherapy causes complex changes in hair follicle cells that can lead to hair loss.

Bmpr2 and Acvr2a receptors are crucial for hair retention and color.

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

A specific signal from hair cells controls the tightening of the surrounding muscle, which is necessary for hair shedding.

Activating STAT5 in the skin's dermal papilla is key for starting hair growth, regenerating hair follicles, and healing wounds.

Dexamethasone affects hair growth by altering levels of proteins that either promote or inhibit hair follicle growth.

The research found that certain factors in hair follicle cells control hair growth and development, and these could be used to create new treatments for hair loss.

Short photoperiods improve cashmere growth and quality in goats by changing hormone levels and gene expression.

Androgens can both promote and prevent hair growth due to differences in gene expression in hair follicles.

PPAR alpha may help in hair growth and could be a target for treatment.

Activins and follistatins, part of the TGFβ family, are crucial for hair follicle development and skin health, affecting growth, repair, and the hair cycle.

Certain cannabinoids may help increase hair growth and could be useful for treating hair loss.

Melatonin helps regulate hair growth and protects the hair follicle from stress.

Goat hair follicles have insulin-like growth factor-I receptors that might affect hair growth, but no melatonin receptors were found.

Glypican-1 is important for blood vessel growth in hair follicles and could help treat hair loss.

BMP signaling is crucial for skin and hair growth.

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

EGF and KGF signalling prevent hair follicle formation and promote skin cell development in mice.

HSPGs help control stem cell behavior, affecting hair growth and offering a target for hair loss treatments.

Melatonin helps regulate hair growth and may treat hair loss.

Bone Morphogenetic Proteins (BMPs) help control skin health, hair growth, and color, and could potentially be used to treat skin and hair disorders.

Neurotrophins are important for hair growth and could help treat hair loss.