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Researchers found that bulge cells from human hair can grow quickly in culture and have properties of hair follicle stem cells, which could be useful for skin treatments.

Miniaturized hairs stay connected to muscle in alopecia areata, allowing possible regrowth, but not in androgenetic alopecia.

The hair follicle bulge is an important area for adult stem cells involved in hair growth and repair, with potential for medical use needing more research.

Thioglycolic acid and L-cysteine change hair structure differently during perms, affecting hair strength and curling efficiency.

Rac1 is essential for proper hair structure and color.

Hair's internal fibers are arranged in a pattern that doesn't let much water in, and treatments like oils and heat change how much water hair can absorb.

Keratin 33A is a key protein in goat winter coats, especially in high-producing breeds.

Keratin injections can promote hair growth by affecting hair-forming cells and tissue development.

ADAM 10 and ADAM 12 proteins are involved in different stages of hair growth and could be targets for treating hair disorders.

VEGFR-2 activation is likely involved in hair follicle growth, survival, and development.

EGF makes hair follicles grow longer but stops hair production.

Vitamin D3 affects cell differentiation in specific skin areas.

Hair growth can be induced by certain cells found at the base of hair follicles, and these cells may also influence hair development and regeneration.

Human hair's ability to get wet is complex and can change with treatments, damage, and environment.

Infrared and Raman imaging can non-destructively analyze hair structure and help diagnose hair conditions.

Hair proteins have weak spots in their α-helical segments.

Two patients with porphyria cutanea tarda experienced their grey hair turning dark again.

Keratin fibrils in hair form and stop growing at specific points in the follicle.

Human hair keratin fibers have a detailed nano-scale structure that changes with different conditions.

The document concludes that while lab results for hair growth promotion are promising, human trials are needed and better testing methods should be developed.

Prenatal stress changes how male and female rats enjoy rewards differently, linked to sex hormones.

PDI helps restore over-bleached hair's strength and structure by attaching special peptides.

Antler velvet hair and body hair of red deer have different structures that help with protection and insulation.

Monotreme hair structure and protein distribution are similar to other mammals, but their inner root sheath cornifies differently, suggesting a unique evolution from reptile skin.

Heat damages hair, with Asian hair losing more protein than Caucasian hair.

Stress hormone CRF can cause hair loss by affecting hair growth cells and hormones.

CD99 is highly present in certain skin cells and could help treat skin conditions.

Hexi cashmere goats' hair growth varies by stage, with Hoxc13 linked to hair activity.

Phaeodactylum tricornutum extract helps hair follicle cells grow by activating the ERK1/2 pathway.

The document explains how hair is studied in forensics to identify its source and its role in criminal investigations.