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Different tests are used to see how hair care products affect hair, and choosing the right test is important for accurate results.

Keratin's mechanical properties are influenced by hydrogen bonds and secondary structure, and can be improved with the SPD-2 peptide.

Wheat straw is valuable for its health benefits and various industrial uses.

PRP is effective for hair loss and might work better with other treatments, but more research is needed.

Environmental and cosmetic factors, including heat, chemicals, and sun exposure, can cause hair loss and damage.

A tough membrane between the outer and inner layers of human hair protects it from damage.

Hair's internal fibers are arranged in a pattern that doesn't let much water in, and treatments like oils and heat change how much water hair can absorb.

Wool and hair fibers absorb moisture similarly due to their keratin structure, with the amount of non-crystalline areas affecting the moisture uptake.

A patch made from human lung fibroblast material helps heal skin wounds effectively, including diabetic ulcers.

A spermidine-based supplement may help hair grow longer by keeping it in the growth phase.

Bleaching hair increases cysteic acid levels in a predictable way.

Hydrogenated palm oil repairs and conditions damaged hair by preventing swelling.

Proteins like BSA and keratin can effectively style hair and protect it, offering eco-friendly alternatives to chemical products.

Human hair keratins can form stable nanofiber networks that might help in tissue regeneration.

Chemical hair straightening improves smoothness and shine but may cause side effects, suggesting a need for safer methods.

Epimedium extract helps increase skin pigmentation and could be a new treatment for conditions with reduced pigmentation.

Yak belly hair has higher porosity and is less stiff than human hair, making it absorb dye better but less suitable as a direct substitute for hair dyeing.

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

CD2 might be a new treatment target for patchy alopecia areata.

A new method accurately measures amino acids in treated hair, showing bleaching reduces amino acids while protein treatments increase them.

Chemical treatments on bleached black hair change its internal structure by breaking and reforming bonds, and treatments with hydrolyzed eggwhite protein help repair it.

Permed hair degrades faster and shows more damage after protease treatment compared to untreated hair.

Cellulose nanocrystals are promising for making effective, sustainable sensors for various uses.

Teratoma hair is similar to scalp hair but has a rougher surface and lower adhesive force.

Using both TGA and DTDG in hair straightening reduces hair damage compared to using TGA alone.

Using gelatin sponges for deep skin wounds helps bone marrow cells repair tissue without scarring.

Caraway, Chinese chives, and cassia may improve health and prevent diseases due to their nutrients and medicinal properties.

Cosmeceuticals are popular for their skin health benefits and anti-aging effects.

Hair dyes and perms can damage hair and scalp, but using interventions can reduce harm.

Proper hair care and safe use of hair products are crucial for those with hair loss.