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Different populations have distinct hair structures related to their ancestry.

Dermatoscopy is a useful tool for diagnosing hair disorders and can help choose samples for more detailed analysis.

Fetal hair follicles have melanocytes with melanosomes at different stages, which are broken down into pigment particles in keratinocytes.

A 17-year-old developed woolly hair nevus in adolescence, which is unusual, and over time the hair darkened and straightened slightly, but microscopic changes persisted.

Using a blow dryer in a certain way can cause localized hair damage with bubble formation inside the hair.

Excessive blow-drying can cause "bubble hair," leading to hair loss and fragility, but improves when heat use is reduced.

A Korean girl developed kinky hair without known cause or effective treatment.

New hair treatment methods are evolving, with microneedling as a promising technique for hair growth.

Human hair follicle stem cells can grow and turn into skin cells on chitosan templates, which may help in regenerative medicine.

Medium lipophilic substances penetrate skin best, and adding ethanol can increase delivery to hair follicles.

Sorafenib may cause hair loss in a way similar to alopecia areata.

A 19-month-old boy with a rare hair disorder showed mild improvement with treatment, but his family chose gentle hair care due to limited success.

One twin girl has Loose anagen syndrome with poorly anchored hair, diagnosed with a simple hair pull test, while her identical twin does not have the condition.

A 10-year-old boy had the earliest reported case of hair that became progressively kinkier but eventually returned to normal on its own.

Microencapsulated human hair cells can successfully grow new hair follicles in mice.

A woman's hair changed to a dry, tangled texture that's hard to comb after treatment with spironolactone, suggesting the medication might cause such hair changes.

A 12-year-old boy with a rare genetic condition has progressive hair loss with no effective treatment.

Proper diagnosis and treatment of hair loss in children are crucial to prevent lasting issues and maintain their quality of life.

The girl has a genetic hair condition causing thin hair since childhood.

Corkscrew and cigarette-ash-shaped hairs in tinea capitis are caused by internal hair degradation and external resistance.

A witch-hazel-based 5% minoxidil solution is effective and safe for women with hair loss who didn't respond to regular minoxidil, especially if they're sensitive to propylene glycol.

The method can identify minerals in hair from water, and using coconut oil or conditioner can prevent mineral buildup.

Water quality affects mineral content in hair, and coconut oil can protect against damage.

A man from Brazil had a rare case of leprosy on his scalp, which improved with treatment.

The study found that pili bifurcati causes hair to intermittently split into two branches, each with its own outer layer.

Different scalp reconstruction methods work well, but the best one depends on the patient's unique needs.

Trichoscopy is good for diagnosing and monitoring hair and scalp problems in children but needs more research for certain conditions.

Reflectance confocal microscopy confirms that yellow dots are signs of damaged hair follicles in alopecia areata.

Multiphoton microscopy can non-invasively tell apart scarring from non-scarring hair loss and could aid in treatment.

Reflectance confocal microscopy can help tell apart scarring from non-scarring hair loss.