What\s cause melasma and facial melanosis?
Melasma and facial melanosis are the result of abnormal mylanocyte and excess melatonin under the skin. Usually occur in female more than male and the age over 30 years old. The stimulating factors are pregnancy, taking contraceptive pills, stress, photo damage, genetic and tumor in the ovary. Other factor is chemical e.g. coal tar oil, perfume and some cosmetic. How to treatment the melasma and facial melanosis? 1. Protection the face from the photo by using sun protection. The way to select sun protection is looking for the SPF, should me more than factor 8. PABA (para-aminobenzoic acid), should be not less than 5%. And Micronized titanium dioxide, which is an active ingredient that works as UV-A and UV-B reflector. 2. Anti-melasma cream. The common process of the anti melasma cream is reducing melatonin by interrupting tyrosinase activity. The active ingredients that usually used for anti-melasma are licorice acid, hydroquinone, retinoic acid, corticosteroid, kojic acid, azlaic acid
