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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.

The hair treatment made hair grow faster and thicker and strengthened the hair roots.

Aging alone rarely causes significant hair loss; hormones are a bigger factor.

The study found that immune responses disrupt hair growth cycles, causing hair loss in alopecia areata.

Trichoscopy helps diagnose hairline recession causes in Egyptian women, with androgenetic alopecia being the most common.

Melanocyte precursors in human fetal skin follow a specific migration pattern and some remain in the skin's deeper layers.

The study found unique skin changes in a rare type of alopecia linked to a skin condition called linear morphea.

Bioengineering can potentially treat hair loss by regenerating hair follicles and cloning hair, but the process is complex and needs more research.

Nanoparticle-based drug delivery to hair follicles is more effective when tested under conditions that match skin behavior.

Laser hair removal effectiveness depends on targeting hair structures without harming the skin, and improvements require more research and expert collaboration.

Hair disorders are caused by a complex mix of biology, genetics, hormones, and environmental factors, affecting hair growth and leading to conditions like alopecia.

Stem cell therapy, particularly using certain types of cells, shows promise for treating hair loss by stimulating hair growth and development, but more extensive trials are needed to confirm these findings.

TrichoScan is a reliable method for measuring hair growth and is useful for assessing hair loss treatments.

The place where hair is transplanted can change its growth rate and length but not its thickness.

Middle-aged women with chronic telogen effluvium experience increased hair shedding but usually don't get significantly thinner hair.

Estrogens significantly influence hair growth by interacting with receptors in hair follicles and may help regulate the hair growth cycle.

The nutritional supplement improved hair density and reduced hair loss in women with female pattern hair loss.

The position of the parietal whorl can predict safe donor areas for hair transplants in Korean men with male pattern baldness.

Hair follicles are smaller in people with androgenetic alopecia compared to those with normal scalps.

Quercetin significantly helps hair growth by activating hair follicles and improving blood vessel formation around them.

Hair transplants are mostly safe but can have minor complications.

Propionibacterium acnes might be linked to hair casts and possibly alopecia.

Topical melatonin and brushing did not affect hair regrowth in Siberian Huskies.

The document concludes that hair analysis is not good for assessing nutrition but can detect long-term heavy metal exposure.

TrichoScan effectively diagnoses different types of hair loss and is linked to low iron stores in patients.

Arab hair is generally thicker but less dense compared to other ethnicities, affecting hair disorder diagnosis and treatment.

Some natural remedies may help with hair regrowth, but more research is needed to confirm their effectiveness and safety.

A new system for classifying curly hair types using precise measurements can improve hair care products and cultural inclusion.

Injections improve hair growth, density, and thickness in women safely.

Measuring reproductive hormones in brown bear hair could help identify their sex and reproductive state, but better collection methods or lab techniques are needed.