Others write that the over-the-counter serum is potent enough to take on previously unmoveable challenges. “I’m 43, and have a very defined ‘What the actual hell?’ wrinkle by my eyebrow—truly, that annoyed eyebrow has the most muscle definition anywhere on my body,” one relatable person explains. They noticed a “marked improvement” on the wrinkle within a week of using CeraVe’s retinol, but what most impressed them was the effect on “deep, puckery, purple,” 26-year-old stretch marks. “Using this cream on them has made such a difference, I’m kicking myself for not getting before and after pictures. The stretch marks are still there, but they are so much lighter and the skin texture is so improved.” To buy: $17; amazon.com. This isn’t one of those products that makes you wait months for results, either. One 58-year-old shopper says they saw a difference the first day, their forehead wrinkles “reduced significantly” and their skin overall softer and smoother. Another goes so far as to name it “liquid gold” thanks to the serum’s knack for “diffusing” wrinkles and making redness, acne, and uneven tone and texture disappear. In a matter of weeks, a different person battling cystic acne and severe redness says 65 percent of their redness evaporated. “Yet another CeraVe winner,” a last shopper concludes. “I use this product and the CeraVe moisturizing wash and I love both. Game changers.”