Visibly correct uneven skin tone and reverse the look of post-acne marks with Neutrogena Stubborn Marks PM Treatment. From the #1 dermatologist-recommended acne brand, this nighttime marks treatment supports skin's natural exfoliation process, helping erase the look of post-acne skin marks, improve clarity and even tone in just 1 week. Inspired by a dermatologist-recommended regimen for clear skin, the clinically proven formula contains retinol SA, a stabilized form of vitamin A that helps visibly correct your complexion, so acne marks look less noticeable. When used together with Neutrogena Stubborn Acne AM Treatment, 86% saw clearer skin after just four weeks. The daily treatment is oil-, paraben-, phthalate-, dye- and fragrance-free. For best results, use the Neutrogena Stubborn Marks PM Treatment along with the Neutrogena Stubborn Acne AM Treatment. The retinol helps create a clear path for the benzoyl peroxide in the AM formula to effectively target acne-causing bacteria.