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The document concludes that the human keratin gene cluster is complex, with a need for updated naming to reflect over 50 functional genes important for hair and skin biology.

A new method accurately measures amino acids in treated hair, showing bleaching reduces amino acids while protein treatments increase them.

Keratin-based particles safely improve hair strength, smoothness, and heat protection.

Recombinant keratin materials may better promote skin cell differentiation than natural keratin.

Hard skin features like scales, feathers, and hair evolved through specific protein changes in different animal groups.

An apple-based supplement was found to stimulate hair protein production, which may help with hair growth.

George Ernest Rogers was a notable scientist who made important discoveries about hair and wool proteins.

The TRPV3 gene mutation affects hair growth by keeping mice in the growth phase longer, which could help treat hair loss.

Hair keratins evolved from ancient proteins, diversifying through gene changes, crucial for forming claws and later hair in mammals.

Different combinations of human hair keratins affect how hair fibers form.

New treatments targeting specific genes show promise for treating keratin disorders.

Using neurohormones to control keratin can lead to new skin disease treatments.

PGA-4HGF may help treat hair loss by activating hair growth pathways and extending the hair growth phase.

The study found specific proteins that could mark different growth stages of cashmere goat hair and may help improve cashmere production.

KAP-depleted hair causes less immune response and is more biocompatible for implants.

Bleaching hair changes its structure and weakens it, which is important for understanding hair damage and creating treatments.

A specific mutation in the K25 gene causes a rare genetic disorder with curly hair at birth and later hair loss, along with dental issues.

Cosmetic procedures can harm hair, but damage can be minimized with knowledge and care; however, once hair is damaged, it cannot be reliably repaired.

Keratin from hair and wool is used in medical materials for healing and drug delivery.

The document concludes that understanding hair's composition and the effects of treatments can lead to better hair care products.

A variant in the KRT31 gene causes a rare hereditary hair disorder called monilethrix.

Cysteine-rich keratins evolved independently in mammals, reptiles, and birds for hard skin structures like hair, claws, and feathers.

High wool density in Rex rabbits is linked to specific gene activity affecting hair follicle development.

CAP1 decreases the expression of a hair-related protein in young Tan sheep's skin.

Keratose, derived from human hair, is a non-toxic biomaterial good for tissue regeneration and integrates well with body tissues.

Environmental factors can cause mutations in skin proteins, leading to skin disorders.

Recombinant keratins can form useful structures for medical applications, overcoming natural keratin limitations.

Changthangi goats have specific genes that help produce Pashmina wool.

Melatonin treatment increases a specific RNA in goat cells that boosts cashmere growth.

The 190-kbp domain contains all human type I hair keratin genes, showing their organization and evolution.