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Intense pulsed light treatment effectively reduces underarm hair by making hair follicles smaller and extending their resting phase.

A protein called sFRP4 from skin cells stops the development of pigment-producing cells in hair.

Polyquaternium 7® builds up on hair, improving its look and feel, and AFM is good for measuring these changes.

Low oxygen levels improve the function of hair and skin cells when they are in direct contact.

RT1640 treatment reverses gray hair and promotes hair growth in mice.

Stress turns hair white by depleting color-giving cells in hair follicles through a specific neurotransmitter related to the body's stress response.

Knowing how skin works and its diseases helps doctors diagnose and treat skin conditions better.

Yak belly hair has higher porosity and is less stiff than human hair, making it absorb dye better but less suitable as a direct substitute for hair dyeing.

Low-level laser therapy using near-infrared light may help heart conditions and promote healing by releasing nitric oxide.

Microneedling is effective for skin rejuvenation and various skin issues, but more research is needed to confirm its safety and effectiveness.

Non-ionic silicone emulsion best protects hair color from sunlight.

Rapid weight loss from dieting and hormonal injections can cause significant hair loss in women.

Combination therapy works best for female hair loss, increasing density and thickness.

Redheaded people may have evolved to efficiently make vitamin D in areas with less sunlight.

Skin and hair changes in horses can indicate serious diseases, and recognizing these signs is important for treatment and management.

The conclusion is that Pigmented Epithelioid Melanocytoma can start from hair follicle stem cells or from a mole on the skin.

Topical tretinoin may increase beard hair density.

Hormone imbalances from endocrine diseases can cause various skin conditions that help diagnose and treat these diseases early.

Possible causes of female hair loss include androgenetic alopecia, telogen effluvium, cicatricial alopecia, and alopecia areata incognita; diagnosis and treatment require dermoscopy and histopathology.

A 35-year-old man had patchy hair loss that was actually due to syphilis, not alopecia areata.

A man with a birthmark on his scalp developed hair loss that improved with treatment, but the link between the birthmark and hair loss was unclear.

Some alternative therapies for vitiligo show promise but need more research.

More men are getting cosmetic surgery, with Botox and hair removal being popular, but these procedures have risks.

Higher light doses cause more damage to hair follicles, predicting better hair removal results.

Heptaminol may cause hair lightening in hemodialysis patients.

Chamomile extract can protect hair from damage caused by light.

Genetics, stress, and health issues can cause early hair greying, which affects self-esteem, and there's no cure, only hair dye.

Contact immunotherapy can cause vitiligo in patients with autoimmune conditions.

Chemotherapy often causes hair loss, which usually grows back within 3 to 6 months, but there's no effective treatment to prevent it.

The document explains how hair is studied in forensics to identify its source and its role in criminal investigations.