Those who wantfast results , they use bleaching products based on hydrogen peroxides.The fairness creams mostly content sun screens which reduce uv radiation partially.Ayurvedic products based on termeric give better glow rather than whitening effect N.M. Dayama
it is anybody's guess whether they work on the skin or not but they surely do work on the pshyce of people who want to get fairer by the day. marketing and positioning of such products has a telling impact on the minds of the poeple.