I'm big into body care — probably because I've dealt with keratosis pilaris (also known as KP) for most of my life. Though completely harmless, this means my outer arms are covered in tiny, sometimes rash-like bumps instead of silky and smooth. I've tried countless products to curb or fix this over the years — medicated creams, sugar scrubs, the works — but I think the SLMD Glycolic Acid Body Scrub ($35) is the product I was always looking for. Gritty and thick (in a good way) like any scrub, this one includes the ultimate missing ingredient: a chemical exfoliant. My arms are noticeably smoother since I started using it, and there's no doubt I'll buy it again.