There is no universal blemish-fighting ingredient in acne prone skin care products as different skin types have different needs. However, exfoliation with ingredients like salicylic acid are commonly found in effective acne prone skin treatments due to their ability to prevent pores from becoming clogged with dead skin cells. Retinol and exfoliating acids are particularly effective for those who are also concerned about visible signs of aging. In addition to helping prevent clogged pores, these ingredients also help improve the appearance of fine lines and wrinkles, uneven skin tone, and other age-related skin changes. How do you get rid of dark spots from acne prone skin? Lingering pigment changes in the form of dark spots are common after blemishes have healed and discolouration caused by past pimples (also known as post-inflammatory hyperpigmentation) can remain long after acne prone skin is under control. Retinol, as well as lipo-hydroxy acid, glycolic acid, and salicylic acid, exfoliate the uppermost layers of the skin where post acne prone skin pigment resides to help promote even skin tone and radiance in acne prone skin. SkinCeuticals Blemish + Age Defense acne prone skin serum has been shown to improve active pimples and post-acne prone skin dark spots. In a split-face, double-blind clinical trial, this serum for acne prone skin provided greater improvement in skin tone and blotchiness, as well as fine lines and rough skin texture, than a prescription retinoid.