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

The study found that the Marangoni effect causes the uneven wetting of surfactant-coated hair due to the surfactant moving into the water.

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

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

Polyquaternium 7® builds up on hair, improving its look and feel, and AFM is good for measuring these changes.

Hair fiber shape and curvature are not significantly linked when ancestry is considered.

Certain polymers can stick to hair and increase volume, working best at a pH of 7 to 9.

Microfluorometry effectively measures how much polymer coats and penetrates hair, useful for evaluating hair products.

Acidic sandy clay damages archaeological hair the most, while dry conditions preserve but make it brittle; silicone oil can help keep the hair flexible.

Goat hair growth and follicle activity change with the seasons and differ between males and females.

Tooth papilla cells can help regenerate hair follicles and grow hair.

South American camelids should be sheared early, fleece type affects fiber quality, and the S/P follicle ratio doesn't distinguish between Bolivian llama genotypes.

Hair follicle stem cells help burns heal faster and stronger.

Blood-derived CD34+ cells speed up healing, reduce scarring, and regrow hair in skin wounds.

Printing human stem cells and a special matrix during surgery can help grow new skin and hair-like structures in rats.

Hair follicle stem cells helped heal a severe scalp burn without needing traditional skin grafts.

Thioglycolic acid and L-cysteine change hair structure differently during perms, affecting hair strength and curling efficiency.

The study found that a polymer treatment changes the charge on hair surfaces, making bleached hair smoother and less porous.

A genetic change in the EDAR gene causes the unique hair traits found in East Asians.

Adenosine helps grow thicker hair in Japanese men with hair loss.

Changes in keratin make hair follicles stiffer.

Activated carbon fibers from Metaplexis japonica seed hair are highly effective for removing the dye methylene blue from water.

Pollution exposure speeds up hair damage.

The G60S Connexin43 mutation causes hair growth issues and poor hair quality in mice, similar to human ODDD patients.

Adding human hair fibers and glass micro-spheres to epoxy improves its wear resistance and strength.

L-cysteine and ultrasound successfully improved rabbit hair fibers for industrial use.

Mushroom-based scaffolds help heal skin wounds and regrow hair.

Angora goat hair grows faster and produces more protein than cashmere goat hair, and certain hormones and nutrients positively affect hair growth and protein synthesis.

Bleaching hair removes its protective top layer and exposes more hydrophilic groups, changing its chemical surface and affecting how it interacts with products.

Breast cancer alters specific molecular structures in hair, which revert after cancer removal.