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Bone-marrow and epidermal stem cells help heal wounds differently, with bone-marrow cells aiding in blood vessel formation and epidermal cells in hair growth.

Moisture content significantly affects how human hair breaks.

Korean women's hair thins, weakens, and greys with age, with mineral and sterol changes.

Hair bleaching causes significant damage to hair and skin.

Hard α-keratins stay stiff in water because the surrounding matrix keeps them dehydrated and strong.

A new hair treatment with caffeine and other ingredients makes hair thicker and less likely to break.

PDI helps restore over-bleached hair's strength and structure by attaching special peptides.

The new wound dressing helps skin heal faster and fights infection.

Mice genetically modified to produce more CD109 in their skin had less inflammation and better healing with less scarring.

Thioglycerol treatment at pH 9.0 with ammonia causes less hair damage and better waving than thioglycolic acid.

Researchers developed a less damaging way to extract red dyes from wool using EDTA and DMF, preserving the fiber's strength for further analysis.

Hair properties vary with age and ethnic origin.

Concrete made from animal bones and human hair is stronger and more environmentally friendly than traditional concrete.

New imaging and testing methods can effectively assess hair shape changes and damage.

Hair's structure and properties change with pH; acidic pH maintains strength and less swelling, while alkaline pH increases water content and swelling.

Stretching damages Caucasian hair's structure more easily than Asian hair.

Giant axonal neuropathy changes the structure of keratin in human hair.

Different sizes of keratin peptides can strengthen hair, with smaller ones possibly increasing volume and larger ones repairing damage.

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.

Amino acids in conditioners improve hair strength, hydration, and color retention.

New wig coating technique makes them more durable, UV resistant, and less static.

New eco-friendly method strengthens and sets hair using light and causes less damage.

The study found a green method for strengthening hair works on all hair colors and is eco-friendly.

Lower pH straighteners change hair more but weaken it.

Transglutaminase can repair damaged hair, making it stronger and shinier.

Repeated digital perming with sodium thioglycolate lotion significantly damages hair protein and structure.

Alkaline hair relaxers damage hair, but cationic and non-ionic polymers can help reduce this damage.

Using 2% collagen in perms reduces hair damage while keeping curls.

Hair quality is genetically determined and linked to its composition and strength.

The keratin-graphene oxide composite is stronger, more heat resistant, and better at blocking gases than pure keratin, offering an eco-friendly use for waste hair.