I must say that "Skin White Serum" is very different from many skin whitening products that I have tried before. Your product does not irritate my skin like what other skin lightening products do. In fact, "Skin White Serum" allows me to effectively lighten my skin and keep my skin well moisturized at the same time. During my course of usage, I never suffered any form of irritations, neither do I experience any uncomfortable reddening. I never know that skin lightening can be so hassle-free until I started using "Skin White Serum" and I am absolutely satisfied with your product!