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Permanent waving damages hair protein and weakens hair, especially with repeated treatments using sodium thioglycolate.

Hair structure changes immediately during perm treatment, with initial damage partially restored later.

Using a hot iron on wet hair can cause dry, brittle hair with air bubbles inside.

Japanese women's curved hair has an uneven internal structure and varied amino acid composition.

Permanent waving weakens hair by altering its protein structure.

Bubble hair deformity may be caused by hair shaft trauma and can improve with gentle hair care.

Japanese women's curved hair has an uneven internal structure and varying amino acid composition.

Two siblings have a rare genetic condition causing curly, coarse hair.

The hairpiece matted due to weathered hair after shampooing.

New genes linked to woolly hair have been found, which could help treat it and change hair texture.

Human hair surface varies in wettability, showing daily and monthly patterns.

Curved human hair has different structures on each side, which might cause its shape and is similar to wool.

Curly hair shape is due to uneven growth patterns in the hair follicle.

Microfibrils are key for permanent waves, and hydrolyzed keratin improves wave formation and hair condition.

Thioglycolate lotions are the most popular method for permanent waving and hair straightening.

The new method can tell how hair fibers react to moisture after treatments.

Skin patterns are formed by simple reaction-diffusion mechanisms.

The authors created a realistic and efficient method to simulate hair movement by combining fluid dynamics with individual hair strand behavior.

Healthy hair is shiny, smooth, and has clean ends.

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

Hair curliness is caused by the arrangement and length of two different cell types.

Hair curliness is due to uneven distribution of different cortices within the hair fiber.

A man with Woolly Hair Syndrome had very curly, fragile hair, and doctors used a special scalp examination to diagnose him without invasive tests.

Uncombable hair syndrome causes dry, frizzy hair that can't be combed flat, seen in a young child.

Wigs are still a popular solution for hair loss to maintain a youthful look.

Hair coloring, waving, and ironing cause more hair damage than not using these treatments.

Human hair can be classified into eight types based on physical features, not ethnicity.