Yep.  Look it up.  The melanin levels drop as a person ages. (nuskin dot com):  Age spots are the last evidence of aging that we're going to discuss. Normal skin pigmentation helps protect healthy skin from the stress of mild UV exposure. Melanin, the skin's photoprotective pigment, is produced in specialized melanocyte cells in the lowest layer of the epidermis (stratum basale). As we age, _melanocyte_activity_decreases_, making the skin more susceptible to UV damage.