Works nightly to help reverse the look of post-acne marks & uneven tone. Retinol SA. Dermatologist recommended brand. Inspired by dermatologist recommended regimen for clear skin. Neutrogena Stubborn Marks PM Treatment: Works nightly to support skin's natural exfoliation process helping erase the look of post-acne marks. Improved clarity and even tone in just one week. Retinol SA: A stabilized, highly refined form of Vitamin A, providing visible complexion correction. Clinically Proven: Non-comedogenic. Formulated without parabens, oil, phthalates, dyes and fragrances. www.neutrogena.com. Questions? 800-582-4048; Outside US, dial collect 215-273-8755; www.neutrogena.com. Our recommended regimen for stubborn acne and post-acne marks: Stubborn Acne AM Treatment; Stubborn Marks PM Treatment. When used together, the Retinol helps release pore-clogging dead skin cells, giving Benzoyl Peroxide a clear path to effectively target acne-causing bacteria. Made in Canada.