Wisdom comes with aging, and we think the most important shopping-related tip we've picked up over the years is:always shop the sales.Amazon Prime Dayis in full swing, and the virtual shelves are stocked to the brim with steals on skin, hair, and makeup products that'll treat mature skin the way it ought to be treated: with a whole lot of love. From fool-proof foundations to skin-plumping moisturizers, this is our definitive shopping guide for over-40 beauty this Prime Day.
