Martha Stewart is now 82 years old and looks as ageless as ever. The surprising thing about that is while many celebrities will credit out-of-budget picks (like $290 moisturizers), Stewart is known to use a lot of Mario Badescu, a brand that has dozens, maybe hundreds, of products that are less than $25. Thanks to October Prime Day, more than 250 of the brand’s products are even more affordable with a 30 percent discount — including its Seaweed Night Cream. 

Close your eyes and pick a Mario Badescu product, you’ll find something suspiciously reasonably priced and with hundreds of rave reviews from shoppers. The Seaweed Night Cream, however, is my must-try pick. It’s a deeply moisturizing overnight treatment that has 2,300-plus five-star ratings.

Amazon

The noteworthy ingredients here are collagen, sodium hyaluronate (a form of hyaluronic acid), and seaweed. Collagen is somewhat controversial when it comes to its topical benefits, but at the very least it can be said that the ingredient intensely hydrates skin making it more plump and potentially minimizing the appearance of wrinkles. Elastin is a protein in your skin that helps it maintain its firmness and elasticity. The less of it you have, the less efficiently your skin bounces back from being pulled, scarred, or damaged. Finally, there is the star ingredient in this formula is seaweed. Brace yourself for its long list of benefits: it’s moisturizing, it balances oil production, it’s rich in vitamin C which addresses signs of aging like wrinkles and dark spots, it soothes inflammation, strengthens the skin barrier, and exfoliates away dead skin. (Whew.) 

That is a mouthful of purported benefits, but thousands of shoppers (including an InStyle editor) will tell you that they are in fact seeing results. One shopper wrote, “I heard that this was a dupe for La Mer and decided to give it a try… My skin is so plump, soft, and smooth in the morning.” Another shopper wrote that the winter made their skin “scaly and painful” but that Mario Badescu’s Seaweed Night Cream “was almost miraculous in helping [their] skin recover.

Head to Amazon to shop the Seaweed Night Cream while it’s just $15.