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Men's and women's pattern hair loss progress differently, with men showing more hair thinning and women having more widespread hair loss.

Aging makes hair thinner and rougher, with less clear edges.

FPHL affects hair density and diameter, causing visible hair loss in older women.

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

The document explains hair growth and shedding, factors affecting it, and methods to evaluate hair loss, emphasizing the importance of skin biopsy for diagnosis.

Southern Chinese women with female pattern hair loss have less, thinner hair and smaller hair follicles.

Hormones, nutrition, and seasonal changes regulate hair growth cycles, with androgens extending growth phases and factors like aging and malnutrition affecting hair loss and thinning.

Japanese women typically start experiencing hair loss after 40, with reduced hair density and thickness being the main factors.

Some children are born with unusually short, fine hair because their hair growth phase is short, but this often gets better by itself during puberty.

Hair length and thickness are related, with thickness peaking at about a quarter of the hair's maximum length.

The EDAR gene mutation leads to thinner and more deformed hair shafts.

Red fox, golden jackal, and gray wolf hairs have similar features but differ in length, thickness, and inner structure.

The new automatic tool accurately measures hair thickness and is reliable.

OCT can effectively examine and reveal details about human hair and scalp conditions.

Pregnant women's hair gets thicker.

Hormone treatments in transsexual individuals reduce hair growth and oil production in male-to-females and increase them in female-to-males.

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

Certain polymers can stick to hair and increase volume, working best at a pH of 7 to 9.

Hair loss caused by longer latent hair cycle and sudden miniaturization, not gradual follicle size reduction.

Hair loss caused by longer latent hair cycle and sudden miniaturization, not gradual follicle size reduction.

The study found that Temporal Triangular Alopecia often starts in early childhood, while Folliculitis Decalvans is characterized by tufted hairs and redness around hair follicles.

The study found that Temporal Triangular Alopecia often starts in early childhood, mainly affects the left side of the scalp, and has no effective treatment except surgery.

Hair from balding and non-balding areas regrows similarly on mice.

Scalp hair grows at 0.37 mm/day, forearm hair at 0.18 mm/day, and thigh hair at 0.30 mm/day, with no significant differences found in people with certain hair conditions.

Laser hair removal works well for people with dark hair and light skin, but it's less effective for light hair or dark skin; improvements are expected.

Hair style affects perceptions of age, health, and attractiveness more than hair color does.

Finasteride works for hair loss by maintaining existing hair follicles, not reversing miniaturization.

Tying a knot can measure hair friction, useful for medical applications.

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

The micrometer caliper is a reliable tool for measuring hair diameter for FUE surgery.