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Researchers found that certain RNA circles in the brain are linked to disease risk, but their exact role in disease is still unknown.

Glyoxylic acid straighteners cause more protein loss but have similar hair strength effects as traditional alkaline straighteners.

Cuticle damage doesn't affect hair's tensile strength; the cortex is responsible for it.

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

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

Treatments improved hair surface and scale structure but didn't increase certain bonds in the hair cortex.

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

Finasteride's effectiveness measured by observing hair cortex changes using a cheap and easy method.

Hair curvature in Japanese people is linked to specific cell types and filament arrangements in the hair cortex.

β-Catenin signaling is involved in brain cell growth after injury and could be a therapy target.

Dye enters hair at the edges of cuticle cells and penetrates more from water than alcohol-based solutions.

Chemical hair straightening changes hair proteins and mostly fixes broken bonds.

Human hair's ability to get wet is complex and can change with treatments, damage, and environment.

Permanent waving weakens hair by altering its protein structure.

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

Moisture content significantly affects how human hair breaks.

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

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

New anti-acne medications are being tested to offer alternatives to current treatments.

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.

New acne treatments show promise as alternatives to traditional therapies.

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

Chemical treatments and daily stresses damage hair, especially the cuticle layer.

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.

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

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

Hair lipids do not protect against humidity.