The 3 Important Rules to Make Sure Your Anti-Aging Products Actually Work - Key ingredients to look out for your anti-aging products are retinols (which promote cell turnover) and hydroquinone (which helps lighten dark spots); alpha hydroxy acids such as glycolic acid and hyaluronic acid (which help exfoliate the skin); antioxidants like vitamin C (which ward off damage from free radicals), and of course, SPF
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