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Hair cuticles remain stable and resilient under stress due to strong protein content and crosslinking.

The fungus Piedraia hortae damages hair by slowly breaking down its layers, leading to long-lasting infection.

High-resolution x-ray images showed three main structures in human hair: medulla, cortex, and cuticle.

Human hair cuticle has five cell layers with specific junctions and granules.

The hairless mutant gene causes early hair loss and affects skin and thymus development in mice.

The cuticle layer in hair follicles thickens during keratinization due to incomplete cytosol loss.

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

Yorkshire Terriers with Colour Dilution Alopecia have reduced melanin and hair structure issues.

The document concludes that individualized treatments for hair issues are effective, certain hair changes can indicate neurocutaneous diseases, specific lotions improve skin health, laser hair removal works but needs more study on long-term effects, men's cosmetics are diverse, peeling is effective but can have side effects, and facial pigmentation is often due to overactive skin cells.

Piedraia hortae fungi dissolve both the outer and inner layers of hair.

The 16th-century mummy's hair was well-preserved due to a calcium surface coat.

K6hf is a unique protein found only in a specific layer of hair follicles.

Laser hair removal may cause skin changes that prevent hair regrowth.

Low-level laser therapy improves hair growth and dermal papilla cell function.

More research is needed to confirm if laser therapy effectively treats hair loss.

Advancements in medical physics and laser technology are improving healthcare but access remains unequal globally.

Dracaena trifasciata can be used in traditional medicine and its authenticity can be verified.

S100A3 protein is crucial for hair shaft formation in mice.

Relaxer treatments damage African–American hair, with commercial products causing more harm than lab-made solutions.

The new method improves protein extraction and analysis in hair, aiding biomedical and forensic work.

Some children are born with unusually short, fine hair because their hair growth phase is short, but this often gets better by itself during puberty.

Researchers developed a nanomedicine for acne treatment that delivers medication with less irritation and is non-irritating for oily skin.

Medium lipophilic substances penetrate skin best, and adding ethanol can increase delivery to hair follicles.

Better hair care products are needed to protect against grooming and chemical damage.

South American camelids should be sheared early, fleece type affects fiber quality, and the S/P follicle ratio doesn't distinguish between Bolivian llama genotypes.

Monotreme hair structure and protein distribution are similar to other mammals, but their inner root sheath cornifies differently, suggesting a unique evolution from reptile skin.

Explosions don't stop hair proteins from being used to identify people.

African hair has the most lipids, while Caucasian hair is more hydrated and stronger.

Chemical hair straighteners can severely damage hair and scalp with repeated use.

Lichen planopilaris and frontal fibrosing alopecia are likely the same disease with different clinical appearances.