I Thought This Trendy Watermelon Serum Was Just a Fad, but I Was So Wrong

When you think of serum, you may envision a petite tube with a clinical-looking pump that deposits a bitty amount of slick liquid. But what if I told you that the best serum I've tried actually comes in a chunky glass jar speckled with cartoon watermelons? Hanhoo's Watermelon Illuminator Overnight Serum ($24) may not be packaged like you imagine, but it works.

Hanhoo, conveniently available in — of all places — Walmart, actually only makes a handful of products. Among its small collection you'll find innovative items like Hydrocolloid Blemish Patches ($5) and Peeling Pads ($4) loaded with collagen, but the brand's signature product is its watermelon day-and-night duo. The Facial Oil ($16) is lovely, but the Overnight Serum is one of those can't-live-without-it deals.

The key ingredient is watermelon extract, which contains obvious hydrating properties and vitamins along with a skin-brightening antioxidant compound called glutathione. There's also some niacinamide, aka vitamin B3, thrown in to minimize pores and fight off fine lines.