Human skin color the liver. On lighter to medium skin tones, solar lentigenes emerge as small- to medium-sized brown patches of freckling that can grow and accumulate over time on areas of the body that receive the most unprotected sun exposure, such as the back of the hands, forearms, chest, and face. For those with darker skin colors, these discolorations can appear as patches or areas of ashen-gray skin. Melanin in the skin protects the body by absorbing solar radiation. In general, the more melanin there is in the skin the more solar radiation can be absorbed. Excessive solar radiation causes direct and
Baumann Skin Types keep allergens and irritants out. Sensitive skin often reacts to skincare products with redness, stinging, burning or acne, while resistant skin rarely experiences negative side effects. The strong stratum corneum associated with resistant skin can make the skin resistant to the beneficial effects of skincare ingredients due to less absorption. There are 4 unique subtypes of sensitive skin, and they are all different, all sensitive subtypes have inflammation in common. This skin attribute is measured by the skin’s tendency to develop unwanted pigment. This can be sun-induced, as in melasma, solar lentigos and freckles, or due to injury in the