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Chemical hair straightening improves smoothness and shine but may cause side effects, suggesting a need for safer methods.

Treatments improved hair surface and scale structure but didn't increase certain bonds in the hair cortex.

Aging significantly affects the hair and scalp of nonbalding Caucasian women, with changes that differ from male pattern baldness.

Disulfide bonds in keratin fibers break more easily under stress, especially when wet, affecting fiber strength.

Pregnancy often causes skin changes like darker nipples, swelling in feet, and stretch marks.

Hair capacitance mapping effectively measures hair surface moisture changes.

Collagen fibrils in mink skin change structure during hair growth, becoming looser and thicker in the active phase.

New imaging and testing methods can effectively assess hair shape changes and damage.

Hairless USP mice have enlarged skin cysts as they age.

Skin changes can help predict thyroid diseases.

Chemical treatments severely damage hair cuticles, especially in previously treated hair.

Pregnant women often experience skin changes, so proper care is needed.

Chemical modifications can alter hair's stability and flexibility, with hydrophobic interactions helping maintain structure in humid conditions.

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

Hair shaft abnormalities can help distinguish mycosis fungoides from other skin conditions.

Thioglycolic acid and L-cysteine change hair structure differently during perms, affecting hair strength and curling efficiency.

Guasha changed rat skin appearance and blood vessels temporarily without affecting certain nerve proteins or fiber structure.

Sulfur mustard damages hair follicles and sebaceous glands in mice.

Aging changes female scalp cells, likely affecting hair health.

Different treatments change the strength and flexibility of human hair.

Pregnant women often experience various skin changes, with pigment changes and stretch marks being most common.

Hair from people with seborrheic dermatitis is thicker scaled, more damaged, and thinner than healthy hair, and atomic force microscopy can help monitor the condition.

Basal cell epithelioma-like changes are most similar to normal basal cells.

UV exposure severely damages hair, making it rough and weak.

Aging causes changes in scalp cells that can negatively affect hair health.

DTDG in hair treatments reduces damage and preserves hair structure.

B-mode ultrasonography and shear-wave elastography can help predict androgenetic alopecia early.

Inhibiting AP1 in mice skin causes structural changes and weakens the skin barrier.