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Cosrx Advanced Snail 96 Mucin Power Essence ($13, originally $25)

This viral essence combines the benefits of multiple skin-care essentials into one, with a nourishing cocktail of ingredients that's designed to improve the skin's vitality and reduce signs of aging. For the full product details, check out our Cosrx Snail Mucin Essence review.

Editor Quote: "It's been months since I started using the essence daily. I use it after cleansing and before applying moisturizer, and I am a complete convert. Though I was worried the additional skin-care step would clog my pores over time, leading to pimples and what have you, my skin's texture has actually improved, and it feels way more even now." — Kelsey Garcia, associate content director, Balance