research Regulation of the human hair cycle
The conclusion is that effectively treating hair disorders is difficult due to the complex factors affecting hair growth and more research is needed to improve treatments.
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research A Hot New Twist to Hair Biology
Capsaicin, found in chili peppers, can slow down hair growth by affecting skin cells and hair follicles.
research Experimental Induction of Alopecia Areata-Like Hair Loss in C3H/HeJ Mice Using Full-Thickness Skin Grafts
Skin grafts on mice can cause an immune response leading to hair loss, useful for studying human hair loss conditions.
research Indications for a brain‐hair follicle axis: inhibition of keratinocyte proliferation and up‐regulation of keratinocyte apoptosis in telogen hair follicles by stress and substance P
Stress can cause hair loss by negatively affecting hair follicles and this effect might be reversed with specific treatments.
research Identification of hair shaft progenitors that create a niche for hair pigmentation
Scientists found cells in hair that are key for growth and color.
research Hair Growth‐Promoting Effect of Carthamus tinctorius Floret Extract
Safflower (Carthamus tinctorius) extract helps hair grow and could be used in hair products.
research Alopecia Areata in C3H/HeJ Mice Involves Leukocyte-mediated Root Sheath Disruption in Advance of Overt Hair Loss
Hair loss in mice starts with immune cells damaging hair roots before it becomes visible.
research Vasoactive intestinal peptide, whose receptor-mediated signalling may be defective in alopecia areata, provides protection from hair follicle immune privilege collapse
A substance called VIP might protect hair follicles from being attacked by the immune system, and problems with VIP signaling could lead to hair loss in alopecia areata.
research Foot shock stress prolongs the telogen stage of the spontaneous hair cycle in a non‐depilated mouse model
Stress in mice delays hair growth and treatments blocking substance P can partly reverse this effect.
research Measurement of hair growth
Scalp hair grows at 0.37 mm/day, forearm hair at 0.18 mm/day, and thigh hair at 0.30 mm/day, with no significant differences found in people with certain hair conditions.