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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.

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.

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.

Understanding hair surface properties is key for effective hair care products.

Celery extract didn't significantly boost hair growth in the gel.

Immuno-cosmeceuticals from chicken egg yolk can effectively repair and improve damaged hair.

Changing disulfide bonds in human hair affects its melting behavior and thermal stability.

16-MHA can restore the barrier and moisture of damaged hair, making it similar to undamaged hair.

Water and fatty acids affect hair's surface differently based on hair damage, and models can help understand hair-cosmetic interactions.

Human hair keratins can be turned into useful 3D biomedical scaffolds through a freeze-thaw process.

Silk sericin dressing with collagen heals wounds faster and improves scar quality better than Bactigras.

OCT can effectively examine and reveal details about human hair and scalp conditions.

Chemicals and stem cells combined have advanced regenerative medicine with few safety concerns, focusing on improving techniques and treatment effectiveness.

Microfibrils are key for permanent waves, and hydrolyzed keratin improves wave formation and hair condition.

Environmental, chemical, mechanical, and personal health factors can all damage hair and contribute to hair loss or changes in hair quality.

Cosmetic residues on individual hairs can be identified and differentiated using ATR FT-IR microspectroscopy.

The document concludes that hair keratin-chitosan scaffolds were successfully made and are suitable for biomedical use.

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