Most kojic acid soaps are formulated by combining the gentle ingredient with other nourishing compounds like vitamin E and glycerin. This makes kojic acid soaps less drying, with its foaming lather cleaning your skin from within.
Kojic acid is safe to use everyday. Depending on your skin’s sensitivity, it can be used twice a day. Just remember, don’t use kojic acid more than 3 months at a time because that can be damaging to your skin.
Kojic acid is sometimes used in health and beauty products to lighten the skin. It may be used to treat skin conditions, such as sun damage, scars, and age spots. The science behind how kojic acid works as a lightening agent involves its effect on melanin production.