Product Description is a very powerful skin whitening soap made from kojic acid, which is also called Sake or Japanese rice wine. What it does is it aggressively exfoliates the top layer of the skin to reveal a much whiter and smoother skin tone underneath. Exfoliation plays a key role in skin whitening because if the skin is not exfoliated regularly, the dead skin cells will start to build up and no matter what skin whitening product you use on your skin will simply not work. The best thing about using a kojic acid soap is it’s a skin defoliator and whitener at the same time – it’s the only soap that you need to use to have a smoother, whiter and even skin tone.