The information in this article SKN Renew Review explains what causes variations in skin tones, as well as briefly touching on freckles and age spots. This background information will help you understand how skin lightening works. Let’s start with this question.

Freckles and age spots are melanin clumps that occur due to sunlight exposure, typically in fair-skinned people. In people with darker complexions or skin tones, the melanin producing cells are more active, overall, rather than just in spots or clumps. But, even in people with darker skin, areas that are infrequently exposed to sunlight are lighter shades.