Exfoliants accelerate skin turnover by removing the accumulation of dead cells and thickened outer layers of the skin. The intended result from their regular use is to reveal fresher-looking, newer skin by dissolving the superficial layer of buildup that is made up of sloughed off skin cells, oils and environmental impurities. Regular use (about one or twice a week) can help you to maintain an improved appearance in texture and promote a revitalized complexion. Some common exfoliants used in skin care products include salicylic acid, alpha hydroxyl acids, beta hydroxyl acids, lactic acid and glycolic acid. The potential side-effects following their use include irritation and sensitivity to the sun. If you include an exfoliant in your skin care regimen, make certain to apply sunscreen daily – an SPF15 moisturizer is an easy way to incorporate the necessary sun protection. Overuse of exfoliants will result in skin irritation, and avoid these products altogether if you have sensitive skin.