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Women with PCOS have more depression and stress due to high androgen levels, not obesity or insulin resistance.

Testosterone may worsen hair loss by affecting hair growth signals, while different prostaglandins can either hinder or promote hair growth.

Moisture makes hair flexible for reshaping during blowouts.

Scarless healing is complex and influenced by genetics and environment, while better understanding could improve scar treatment.

Permanent waving weakens hair by altering its protein structure.

Surfactants can protect or harm hair, skin, and nails, depending on their type and use.

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.

The article concludes that microvascular free flaps, especially the latissimus dorsi flap, are recommended for large scalp reconstructions, and hair transplantation offers high survival rates and excellent aesthetic results.

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.

New suturing technique with wider intervals and shallow stitches helps prevent scalp scars and promotes hair growth.

Human hair varies widely and should be classified by curl type rather than race.

Curly hair is mechanically different from straight hair and may need new testing methods.

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.

Traction alopecia is hair loss from pulling on hair too much.

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