Thus, many products aiming to block it utilize melanin derivatives.
Avobenzone is one of the best-known retardants of this entity. One form of it causes thymine dimers to form in DNA, and it is often used on ethidium bromide-stained gels following electrophoresis. Its B form causes the release of melanin from melanocytes in humans to produce a tan color and slow this entity's effects. Thus, many products aiming to block it utilize melanin derivatives. For 10 points, name this part of the spectrum just shorter than visible with wavelengths 10 to 400 nanometers, a part of sunlight causing sunburns, which is blocked by the ozone layer.
Avobenzone is one of the best-known retardants of this entity.
{ultraviolet} light [accept UV; accept UVA until “form”] do not accept “sunlight”]