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Minoxidil increases hair weight and count temporarily in men with hair loss.

Finasteride increases hair weight and count in men with hair loss, with best results after four years.

Finasteride increases hair weight and count in men with hair loss.

Older people's hair becomes less shiny because it gets more uneven and curved.

Lower levels of certain genes in hair cells improve hair loss treatment outcomes.

Too much or too little selenium in the diet can cause hair loss and graying in mice.

Psychotropic drugs can cause hair loss or excessive hair growth.

Certain growth factors affect hair loss in women and could be targeted for treatment.

Pilocarpin can cause hair regrowth and color change in some cases but not in others, and it may have side effects in animals.

Different melanocyte types in hair follicles either survive or die during the catagen phase.

Menopause-related hormonal changes affect hair but are not the only cause of hair changes in middle-aged women.

Chemotherapy causes complex changes in hair follicle cells that can lead to hair loss.

After menopause, some women lose scalp hair and gain facial hair, with patterns suggesting different underlying causes.

Infrared and Raman imaging can non-destructively analyze hair structure and help diagnose hair conditions.

Different ethnicities and treatments affect human hair strength and structure.

Different hair cleaning methods caused varying levels of damage to the hair's outer layer.

Chemotherapy causes hair loss starting soon after treatment begins and recovers about 3 months after ending, while tamoxifen does not significantly affect hair growth.

Cows moving from tie-stall to free-stall housing had more heel problems, less joint lesions, and higher stress levels.

Vervet monkeys show physical changes like hair loss and scrotal color changes due to stress or nutrition issues.

Salicylic acid can safely exfoliate and regenerate skin without causing inflammation.

Not eating enough protein can cause hair roots to shrink and lose color, and hair to become thinner.

Permanent waving weakens hair by altering its protein structure.

Men's hair loss is caused by hormones and genes, and can be treated with medication and surgery, while graying is due to aging and has no prevention except dyeing.

Hair growth slows and shedding increases after childbirth, but most women don't experience excessive hair loss.

Valproic acid can cause reversible hair curling and persistent hair thinning.

Hormone levels in hair change during pregnancy, with progesterone increasing significantly compared to non-pregnant women.

Girls had higher stress hormone levels during school due to social and emotional issues, while boys had higher overall hormone levels with slight changes when school started.

Scanning electron microscopy revealed four distinct hair root shapes in alopecia areata, suggesting a less invasive diagnostic method.