The Cosrx Snail Mucin Serum is a <a rel="noreferrer noopener" target="_blank" href="https://wwd.com/shop/shop-beauty/best-tiktok-beauty-products-1235635397/">TikTok-famous beauty product</a> that our editors can get behind. The <a href="https://wwd.com/shop/shop-beauty/best-face-serums-1235132599/" target="_blank" rel="noreferrer noopener">top face serum</a> helps improve skin texture and it works to reduce redness and irritation with consistent use. While it's super lightweight, it also provides a major dose of hydration you'll love this winter. <br><br><strong><a rel="noreferrer noopener" target="_blank" href="https://wwd.com/shop/shop-beauty/cosrx-snail-mucin-essence-1235730432/">Editor testing and review notes</a>: </strong>“CosRx snail mucin essence feels like a lightweight gel on your skin, and dries down to a dewy finish that made my complexion look hydrated and feel silky. After two weeks of testing, I’ve noticed less redness and a subtle plumping effect that’s smoothed fine lines, particularly on my forehead.” — <em>WWD Shop Senior Beauty & Lifestyle Commerce Editor Claire Sullivan</em><br><br><strong>Price upon publish date of this article:</strong> $17.99