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

Enzymes xylanase and pectinase clean wool and specialty hair fibers effectively without damage, offering an eco-friendly alternative to soap and hot water.

The new lab-grown skin model is good for testing sunscreen's protection against DNA damage from UV light.

Researchers created better skin-application menthol capsules that are stable, safe, and penetrate the skin quickly.

UV radiation and visible light can damage hair, but there are ways to protect it.

Vesicular carriers like liposomes may improve cosmetic skin treatment delivery and effectiveness but need more human research.

Removing external lipids from hair reduces moisture and increases strength, while removing internal lipids decreases water permeability.

Using longer PEG chains helps nanoparticles penetrate hair follicles better, improving drug delivery for conditions like alopecia.

Special nanoparticles increased skin absorption of hair loss treatments with fewer side effects.

Analytical chemistry helps understand the makeup and use of ancient medicines, but it's complex and challenging.

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

The conclusion is that a new method to measure hair shine was confirmed to match people's visual assessments.

Outside factors like grooming, chemicals, and the environment can damage hair and cause disorders.

Polyphenols may help treat skin conditions like warts, hair loss, acne, and dark spots, but more research is needed.

The IPL device is safe, effective, and has high patient satisfaction for hair removal.

Stem cell therapies show promise for treating various diseases but face challenges in clinical use and require better monitoring techniques.

Dyeing hair can help target and destroy hair follicles selectively.

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

Finasteride's solubility improves with native y-CDs, enhancing hair loss treatment and reducing side effects.

Smaller finasteride particles increase effectiveness in treating hair loss.

Topical estrogen treatments did not change hair growth in certain mouse strains, questioning previous findings on their role in hair growth control.

The study found a specific pattern of uneven melanin distribution on balding scalps that could help understand skin diseases caused by light exposure.

Estrogen receptors may not affect mouse hair growth as previously thought, and oxybenzone in sunscreen is stable in sunlight.

Redheaded people may have evolved to efficiently make vitamin D in areas with less sunlight.

DNA can predict physical traits like eye and hair color accurately, especially in Europeans, but predicting other traits and in diverse populations needs more research.

Eastern Red Bat hair contains various glycerophospholipids, mainly phosphatidylcholine.

Crossbreeding improves goat fiber quality, and specific genes affect hair traits and color.

Washing hair daily is better and preferred, with no negative effects.

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

Hair stiffness increased by 13.2% after caffeine treatment, validating the Stiffness-Angle Law as an effective measurement method.