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The hair follicle dermal sheath is essential for hair shedding and needs to communicate with the outer root sheath for normal hair growth cycles.

Hair cortisol levels can show increased stress during late pregnancy but only for up to six months.

The conclusion is that certain cell interactions and signals are crucial for hair growth and regeneration.

Chemotherapy causes hair loss by damaging hair follicles and stem cells, with more research needed for prevention and treatment.

Laser hair removal is the most requested cosmetic procedure and has become a scientifically-based treatment suitable for all skin types.

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

Hair follicle dermal stem cells are key for regenerating parts of the hair follicle and determining hair type.

Hair follicle stem cells are key for hair and skin regeneration, can be reprogrammed, and have potential therapeutic uses, but also carry a risk of cancer.

The Sonic hedgehog pathway is crucial for new hair growth during mouse skin healing.

Stress can stop hair growth in mice, and treatments can reverse this effect.

Manipulating the catagen and telogen phases of hair growth could lead to treatments for hair disorders.

Restoring hair bulb immune privilege is crucial for managing alopecia areata.

One minoxidil-sensitive potassium channel exists in human hair follicles.

Stem cells from hair follicles can safely treat hair loss.

Human hair follicles produce and respond to erythropoietin, helping protect against stress.

Hair follicle stem cells are a promising source for tissue repair and treating skin or hair diseases.

The article explains the genetic causes and symptoms of various hair disorders and highlights the need for more research to find treatments.

Improving the environment and cell interactions is key for creating human hair in the lab.

Wnt10b makes hair follicles bigger, but DKK1 can reverse this effect.

Human skin cells can create new hair follicles when transplanted into mice.

Phosphatidic acid may help hair grow by affecting cell growth pathways.

Hair problems can be caused by genetics or the environment, and treatment should focus on the cause and reducing hair damage.

Hair follicles can help wounds heal faster and this knowledge could be used to treat chronic skin ulcers, with a potential use of a special stem cell hydrogel to enhance healing.

Genetic mutations can cause hair growth disorders by affecting key genes and signaling pathways.

Hair follicle regeneration possible, more research needed.

Engineered skin substitutes can grow hair but have limitations like missing sebaceous glands and hair not breaking through the skin naturally.

Some patients with mycosis fungoides or Sézary syndrome experience hair loss, which may be similar to alopecia areata or linked to skin lesions, possibly due to abnormal T cells, and bexarotene can help treat it.

Apple extract called procyanidin B-2 was found to greatly increase hair growth.

Trichoscopy is a useful tool for diagnosing hair disorders without pulling out hair.

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.