I am almost 40 years old and have tried almost every type of acne product there is out there. Dermalmd acne serum is the first product to get rid of the acne on my chest. It works very quickly. I have not had any issues with it staining my clothes when I put it on in the morning. The serum does dry my skin out and causes some itching but it is seriously worth it. It is like a miracle acne serum.