The Neutrogena Rapid Tone Repair Dark Spot Corrector is a fast-acting, potent spot treatment for all types of hyperpigmentation including dark spots, age spots, and post-acne marks. This particular dark spot corrector contains three active ingredients which include retinol, vitamin C and salicylic acid. Retinol helps to speed up cell turnover, which helps to reveal new, brightened skin, while vitamin C works to brighten the skin and even out skin tone. Both of these actives are considered to be gold standard ingredients in skincare and can be very beneficial in treating a number of skincare concerns, including hyperpigmentation. Salicylic acid on the other hand, is a beta hydroxy acid that helps to exfoliate the skin. While salicylic acid is mostly known for keeping acne, blackheads and whiteheads at bay, since it is an exfoliant, this ingredient can also be used to create smoother, more even skin tone.