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Hair color is determined by melanin produced and transferred in hair follicles.

Activating the Sonic hedgehog gene in mice can start the hair growth phase.

Young Indians with premature graying often have lower levels of certain nutrients and unhealthy lifestyles.

Some patients developed hair loss after islet cell transplant possibly due to their immune-suppressing medications.

Researchers concluded that safe hair follicle extraction limits in FUE vary by individual characteristics and proposed a method to calculate these limits to maintain appearance.

Suriname uses many plants for beauty, with potential for a beauty industry, but more evidence is needed for product effectiveness.

Forensic DNA phenotyping can help generate new leads in cold cases but faces accuracy, legal, and acceptance challenges.

Nanomaterials can improve hair care products and treatments, including hair loss and alopecia, by enhancing stability and safety, and allowing controlled release of compounds, but their safety in cosmetics needs more understanding.

The review concluded that better studies are needed to prove if Low-Level Laser Therapy devices for hair growth really work.

Hair repigmentation can indicate malignancy and should be investigated.

A new AI model diagnoses hair and scalp disorders with 92% accuracy, better than previous models.

Over half of young people in Saudi Arabia experience early gray hair, linked to factors like smoking, stress, and family history.

Clippers are the best tool for collecting dog hair for chemical tests, being fast and stress-free for the dog.

Thyroid disease can cause skin, hair, and nail problems, and treating the thyroid condition often improves these symptoms.

Dr. Bernard Cohen created a new system to classify hair loss using numbers and a detailed scalp map.

Blond hair lightens more with visible light directly, while ultraviolet light lightens it after washing by damaging other hair parts.

Blond hair in Solomon Islanders is due to a unique genetic variant, not European ancestry.

Four children had unmanageable pale blond hair due to uncombable-hair syndrome.

UV radiation causes significant protein loss and color changes in hair, especially blond hair.

New genetic locations explain much of hair color variation in Europeans.

Hair examination helps diagnose rare neurological diseases in children.

Oxidative hair dye changes hair color and structure but doesn't weaken it.

DVI provides detailed 3D imaging of hair and shows how various products protect and enhance hair.

Men have more tryptophan in their hair than women, and it increases with age and is higher in darker and grey or white hair.

Chemical and physical treatments like bleaching, dyeing, and UV radiation damage both Caucasian and Afro-ethnic hair.

Short Anagen Syndrome causes persistently short hair and increased shedding, usually improving after puberty.

DNA can predict physical traits like eye and hair color accurately, especially in Europeans, but predicting other traits and in diverse populations needs more research.

A man grew hair on his penis, which is not common, and needed surgery to remove it.

The study found a green method for strengthening hair works on all hair colors and is eco-friendly.

Taking vitamin B6 corrected a pregnant woman's metabolic disorder, which changed her hair color.