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Permanent waving damages hair protein and weakens hair, especially with repeated treatments using sodium thioglycolate.

Rac1 is vital for hair follicle health but not needed for skin maintenance.

Acitretin improved monilethrix symptoms temporarily, but they returned after stopping treatment.

CD34 is a marker for isolating stem-like cells in mouse hair follicles.

BMP receptor IA is essential for proper hair cell differentiation in mice.

New mutations in KRT83 and KRT86 are linked to the hair disorder monilethrix.

The research identified two types of keratinocytes in chicken scales: one for hard scales and another for soft skin, with similarities to human skin differentiation.

Understanding keratinization is crucial for treating skin conditions like ichthyoses and psoriasis.

Sebaceous glands can heal and regenerate after injury using their own stem cells and help from hair follicle cells.

VEGF helps squamous cell carcinoma grow in ways beyond just blood vessel formation.

Early intervention in patch-type alopecia may prevent progression to more severe forms by targeting immune pathways and preserving keratin.

AP-2α and AP-2β proteins are essential for healthy adult skin and hair.

Certain long non-coding RNAs in cashmere goats affect hair growth when treated with a specific growth factor.

Epidermal keratinocytes start wound healing and inflammation after schistosome infection.

JAK inhibitors improve hair growth in alopecia areata, especially in patchy types.

Hair grows like a crystal at a solid-liquid interface without cell division.

Dermal sheath cells help heal wounds by showing both skin and connective tissue traits.

FGF18 controls hair growth rest phase.

One twin girl has Loose anagen syndrome with poorly anchored hair, diagnosed with a simple hair pull test, while her identical twin does not have the condition.

Scientists used stem cells to create a model of the skin disease Epidermolysis Bullosa simplex, which helped them understand its molecular mechanisms and could aid in finding treatments.

Human hair contains many proteins, with some being highly abundant and modified.

Expressing the human vitamin D receptor in skin cells prevents hair loss in certain mice.

Hair follicles are hormone-sensitive and involved in growth and other functions, with potential for new treatments, but more research is needed.

Cornification evolved from keratinization in vertebrates, with differences between mammals and sauropsids.

Degraded hair shafts resist contamination and can be easily cleaned.

Human hair proteins vary by individual, body site, and ethnicity, useful for forensics.

Spermidine may help reduce hair loss and deserves further testing as a treatment.

Corneal cells can transform into hair-producing skin cells when exposed to certain signals.

Keratinous tissues have multiple structural layers, including ordered keratin and lipid granules.

Atoh1 expression can create new Merkel cells in the skin.