Q: Does skin whitening soaps really work? It's very easy for you to get rid of blemishes and stubborn marks caused by either acne or sun exposure by using a skin whitening soap. They will be effective to get rid of these spots in a few weeks after constant use and are the safest way to even out the skin on your face.
How long does kojic acid take to lighten skin?
FOR KOJIC ACID It will take 1-2 months of consistent topical use before you begin to see improvements for the lightening of age spots/sun spots, dark spots, or the treatment of melasma.