Learn More About Adult Bicycles. Find the bike that's right for you. Whether you're cruising down city streets or taking on the roughest mountain terrain, choose a bicycle that matches your needs as a cyclist.
Dermal melanin is produced by melanocytes, which are found in the stratum basale of the epidermis.
The colour is due to pigment accumulating in the skin cells (keratinocytes). Skin pigment (melanin) is made by cells called melanocytes. They don't produce much melanin during the winter months, but produce more when exposed to the sun. The melanin is diffused into the surrounding skin cells, called keratinocytes.