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Hair breaks differently when wet or dry and is affected by its condition and treatments like perms and bleaching.

Blond hair lightens more with visible light directly, while ultraviolet light lightens it after washing by damaging other hair parts.

Different hair types from various ethnic groups affect hair shine due to characteristics like thickness and shape.

UV radiation significantly damages hair, especially with humidity, making it more vulnerable to further damage.

Certain small molecules and polymers can change hair's physical properties and how it feels by affecting the bonds within the hair.

Merino wool fibers change shape with moisture, while human hair shape stays the same.

The gel with icariin speeds up wound healing, reduces scarring, and helps hair growth by controlling BMP4 signaling. It also reduces inflammation and improves wound quality in mice, adapts to different wound shapes, and gradually releases icariin to aid healing. It also prevents too much collagen and myofibroblast formation during skin healing.

Penile strangulation from hair can cause severe harm but can be treated if caught early.

Children's hair is more elastic, but tensile strength is similar across different factors.

Hair aging is inevitable, but using the right hair care products can help maintain hair health.

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.

Runx1 helps control the KAP5 gene in human hair follicles.

The study found nine new hair protein genes in human hair follicles.

Small amounts of DNA can be found in the hair shaft, especially near the root, but it decreases with hair treatments and washing.

TGF-alpha is present in sheep and ferret skin and may affect hair growth without directly stimulating cell proliferation.

Careful selection of mice by genetics and age, and controlled housing conditions improve the reliability of hair regrowth in wound healing tests.

Hair conditioners with argan oil or camellia oil improve the strength and color of bleached hair.

Nanomaterials can improve hair care products and treatments, including hair loss and alopecia, by enhancing stability and safety, and allowing controlled release of compounds, but their safety in cosmetics needs more understanding.

Noncrosslinked hyaluronic acid helps human hair cells grow and could be a potential hair loss treatment.

Healthy scalp leads to better hair quality and less damage.

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

More kenogen hairs cause hair thinning in androgenetic alopecia, not hair miniaturization.

Hair strength is similar across different scalp areas, and not affected by age, gender, or hair thickness.

Tying a knot can measure hair friction, useful for medical applications.

Hair diameter and curvature are mostly determined by genetics.

Researchers found 617 genes that behave differently in cashmere goat hair follicles, which could help understand hair growth.

Colored hair-thickening fibers can help hide hair loss in some people with Epidermolysis Bullosa but may cause scalp irritation.

Histone H4, released by cells exposed to colchicine, can cause hair loss by inhibiting cell growth and enzyme activity.

Most dogs have hair whorls on their chest and limbs, with shelter dogs and short-haired dogs having more chest whorls.

Coenzyme Q10 helps reduce aging in human hair.