[Rosance]

Yes, I buy it from that site. The Heritage has awesome amount of reviews and it's cheaper too. And I believe any black soap will do (at least from a well trusted company). Check the reviews for people with results regarding acne, I'm pretty sure there should be many. BTW, I love Iherb I really do not know if it helps with stains, but if it gets rid of acne scars, I believe it should get rid of stains as well.

P.S. I might give Heritage a try once I am done with mine