Human hair has melanin which gives darkish coloration and defense from UV radiation. Human hair can take up and emit light-weight across an array of wavelengths. The picture earlier mentioned depicts melanin autofluorescence at 365-four hundred nm excitation from a strand of dark brown human hair. Though biotin is https://listbell.com/story5649153/the-single-best-strategy-to-use-for-hair-products-for-hair-growth