Kojic acid soap is fermented malting rice that is made into soap. It is found to be an effective product to use in pigment reduction.
Kojic soap whitens skin the natural way by limiting the release of tyrosinase, the fundamental enzyme in melanine production, causing the skin to appear brighter. This soap also evens skin tones and is widely used to mildly exfoliate the skin. It can remove dark and age spots as well as freckles and scars.
For best results and to avoid drying the skin, use kojic acid soap only once a day. Do not continue using it if skin irritation occurs.