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Caucasian women's hair appears thickest in their 20s, with perceived thinning after mid-30s due to both decreasing density and diameter.

Keratin peptides can change hair shape gently without harsh chemicals.

Women's hair generally gets thinner and less dense starting in their mid-thirties, with hair loss becoming more common as they age due to both genetics and environment.

The Trichoscan system was found to be inaccurate for measuring hair growth, needing better software to be useful.

Claudin-1 is important for the barrier function and growth of hair.

Pregnant women's hair gets thicker.

Keratin fibrils in hair form and stop growing at specific points in the follicle.

The hair shedding scale accurately identifies abnormal hair shedding in women with long hair, with grades 5 and 6 indicating excessive shedding.

The conclusion is that future hair loss treatments should target the root causes of hair thinning, not just promote hair growth.

Hair follicle stem cells and skin cells show promise for hair and skin therapies but need more research for clinical use.

Intermediate hair follicles are a better model for studying hair growth and testing hair loss treatments.

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.

Hair treatments cause significant structural changes, especially with excessive heat, regardless of ethnicity.

CE-PTG detects early hair follicle issues in balding areas, helping measure male hair loss.

Hair care products don't cause hair loss if used correctly.

Aging scalp skin contributes to hair aging and loss, and more research is needed to develop better hair loss treatments.

Bleaching hair damages protein structure, especially keratin, leading to weakened hair.

Treatment with dutasteride, minoxidil, and artificial hair transplantation improved appearance but caused folliculitis.

Hair greying is linked to reduced ATM protein in hair cells, which protects against stress and damage.

A baby's toe was saved from serious damage by quickly removing a hair wrapped tightly around it.

Understanding hair biology is key to developing better treatments for hair and scalp issues.

White hair has less lipid content and absorbs water differently than brown hair.

Researchers found specific genes in the part of hair follicles that could help treat hair disorders.

Scientists found genes linked to the growth of high-quality brush hair in Chinese Haimen goats.

Women's hair grows faster and thicker than men's, but hair growth slows for both genders with pattern hair loss.

New hair loss treatments have evolved from understanding hair biology and patient needs.

Hair absorbs molecules differently based on their size, charge, and love for water, and less at higher pH; this can help make better hair products.

Chemotherapy caused the patient's hair to have alternating thick and thin segments.

Researchers found that certain lipids, especially vitamin D3, are lower in prematurely grey hair than in pigmented hair.