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Disrupting Smad4 in mouse skin causes early hair follicle stem cell activity that leads to their eventual depletion.

Heparan sulfate is important for hair growth, preventing new hair formation in mature skin, and controlling oil gland development.

Asian hair is generally straight and thick, with unique disorders and properties, and more research is needed to understand it fully.

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

Researchers found a new gene, hacl-1, that is active in mouse hair follicles during hair growth and may be important for hair biology.

Changthangi goats have specific genes that help produce Pashmina wool.

Removing external lipids from hair reduces moisture and increases strength, while removing internal lipids decreases water permeability.

Telogen is an active phase with important biological processes, not a resting phase.

The study found stem cells in minor salivary glands that can differentiate and are involved in tumor formation when exposed to tobacco.

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

Inhibiting AP1 in mice skin causes structural changes and weakens the skin barrier.

Hair in mammals likely evolved from glandular structures, not scales.

Using longer PEG chains helps nanoparticles penetrate hair follicles better, improving drug delivery for conditions like alopecia.

Eating a balanced diet with specific nutrients is important for menopausal women to manage hair loss.

Egg shell membrane hydrolysates can reduce wrinkles and improve skin health.

Human head hair proteins can be typed into eight distinct patterns, useful for genetic and forensic investigations.

Hair absorbs different substances from solutions based on pH levels.

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

Researchers created a lab model to study human hair growth, showing it can grow and self-regulate outside the body.

The research found that postmortem root bands in hair are likely caused by the breakdown of a specific part of the hair's inner structure after death.

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

Cynatine HNS improves hair and nail quality in 90 days.

Human sebaceous glands can grow back in skin grafts on mice and work like normal human glands.

A woman had hair loss, nail changes, and skin peeling after a COVID-19 infection, which got better on their own.

Different sizes of keratin peptides can strengthen hair, with smaller ones possibly increasing volume and larger ones repairing damage.

Pigmented concealing powders can improve the look of hair density for people with hair loss but need daily application and may not work well in wet conditions.

The document concludes that more research is needed to understand airway repair and to improve tissue engineering for lung treatments.

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.

Bald thigh syndrome in sighthounds is caused by structural defects in hair shafts due to downregulated genes and proteins.

The document concludes that cosmetics need biocompatible, eco-friendly ingredients due to aging populations and demand for effective products.