kojic soap can whiten our skin

I stopped using kojic soap for almost one month and switched to Olay’s natural white facial cleanser. And today I decided to give it a try again. I’ve been using kojic soap when I was still in college wherein my eldest sister itroduced it to me. Kojic soap and Olay cleanser is far different from each other. Olay gives me a rough skin on my nose but when I tried kojic soap, I was amazed that it gives me a soft, smooth skin. I don’t really believe that kojic soap can give me a whiter skin but I was wrong because my cousins and relatives noticed that my skin is now whiter than before and that was just the moment that I start believing that it really helps me whiten my skin.