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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.

A tough membrane between the outer and inner layers of human hair protects it from damage.

Hair's internal fibers are arranged in a pattern that doesn't let much water in, and treatments like oils and heat change how much water hair can absorb.

Red light at 627 nm can safely trigger IL-4 release in skin cells, potentially helping treat inflammatory skin conditions.

COX-2 levels change during the hair cycle and affect skin and hair growth.

Cold waving solutions quickly reduce cystine to cysteine in hair.

UV radiation damages hair by creating holes and peeling cuticle layers.

Chemical hair straightening significantly reduces detectable drug levels in hair.

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

Chemical hair straightening improves smoothness and shine but may cause side effects, suggesting a need for safer methods.

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.

Found 32 genes linked to male baldness, affecting hair growth and stress-related pathways.

Hair stiffness is higher when it has more para-like cortical cells.

Using bacitracin zinc and selenium sulfide one after the other can temporarily turn white hair yellow.

Lower pH straighteners change hair more but weaken it.

Terbinafine can cause hair loss.

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.

Avoid chemical and physical damage to protect hair.

The dietary supplement significantly improved skin, nails, and hair in older adults.

The document concludes that a complete skin restoration biomaterial does not yet exist, and more clinical trials are needed to ensure these therapies are safe and effective.

The document concludes that the trichogram is a useful tool for diagnosing hair loss and suggests semi-organ cultures for practical trichological research.

The document concludes that a deeper understanding of skin aging and photodamage is needed to create better skin treatments.

Good nutrition may help prevent premature hair graying.

Black rice extract ointment significantly promotes hair growth in Wistar rats.

The herbal hair oil with natural extracts can improve hair health and reduce dandruff.

Chemical treatments severely damage hair cuticles, especially in previously treated hair.

Indian medicinal plants can help with hair growth and common hair issues.

Lipids are important for healthy hair, but their exact role is not fully understood and needs more research.

Onion and Aloe vera can help protect hair from damage caused by hair dyes.