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Hair ages as the cuticle wears down, especially beyond 1 meter from the root, affecting its strength and shine.

mHa2 and mHa3 keratins have different structures and roles in mouse hair and tongue tissues.

Permanent waving weakens hair by altering its protein structure.

Infrared and Raman imaging can non-destructively analyze hair structure and help diagnose hair conditions.

Nanotechnology improves hair care products by enhancing ingredient stability, targeting treatment, and reducing side effects, but more research on its toxicity is needed.

Growing hair follicles have high mitochondrial activity and ROS in specific regions, aiding hair formation.

The research found two types of calcium in human hair, one that varies among individuals and another that is consistent across people.

Hair bleaching causes significant damage to hair and skin.

Bleaching hair causes severe structural and chemical damage, including protein loss and oxidation.

Hair has unevenly distributed proteins and lipids, with lipids mainly in the cuticle and proteins in the cortex and medulla.

Polymeric pretreatments can significantly reduce hair breakage and damage from hot flat irons.

Different populations have distinct hair structures related to their ancestry.

Melanin in black hair protects it from sun damage better than light-brown hair.

Human hair has a new region with ordered filaments and the cuticle contains β-keratin sheets.

Hair malformations may occur due to timing issues in hair development.

μ-Crystallin may help hair growth by affecting thyroid hormone levels in mouse hair follicles.

The study found that thioglycolic acid breaks down hair bonds more consistently than l-cysteine, which is less damaging to hair.

Modified keratin binds better to hair, especially bleached hair.

Human hair has different protein structures in its cuticle and cortex.

Hair follicle cells become four types: medulla, cortex, cuticle, and inner root sheath.

Hair's strength and flexibility come from its protein structure and molecular interactions.

Human hair has more unsaturated fats inside than on the surface, and certain lipids may help bind the outer and inner layers together.

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

OCT can identify hair structures, but chemical treatments can damage them.

Sunlight damages hair, causing cuticle loss, protein changes, and discoloration.

Abnormal cuticle and hair shaft medulla cause hair loss in androgenetic alopecia; sonography helps diagnose and manage it.

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

The cell membrane complex in mammalian hair has three distinct types with different structures and chemical properties.

Holes in mature hair are likely caused by the removal of substances during hair care.

Chemical and physical treatments like bleaching, dyeing, and UV radiation damage both Caucasian and Afro-ethnic hair.