This is one of the best and trusted skin whitening ingredients. It provides the fastest results. This ingredient acts to lighten the skin in several methods. One of the ways is by suppressing tyrosinase in the body. In general, the enzyme is vital to produce tyrosine, which is a precursor to melanin. Kojic Acid inhibits its production, which further leads to producing less melanin. So, if you regularly use Kojic Acid that can invariably inhibit the production, it can lead to whiten skin. So, Kojic Acid is believed to be one of the most effective ways for whitening skin of your butt. This ingredient is usually derived from a particular species of mushroom.