(1 oz. / 30 ml) Pro Strength Skin Lightening Serum with Kojic Acid, Alpha-Arbutin &amp; Vitamin C - Skin Bleaching, Hyperpigmentation, Melasma, Acne Spot by Skin Beauty Solutions. $18.99. If Skin Lightener is used regularly, you should see the improvements in a matter of 3-6 months. For some people this period can be longer or shorter, depending on their particular skin type.. Ingredients: Kojic 4%, alpha arbutin 2%, ascorbic acid 5%, Aloe barbadensis (Aloe) Juice, Cocos nucif...