Superstar Supplement: Topical Soy. “Soy contains polyphenols, which are powerful antioxidants that scavenge the skin-damaging free radicals you come into contact with every day,” board-certified dermatologist Jeffrey Morris, MD, FAAD (aka @TikTokSkinDoc1) recently explained. TikTok video.

This is important because free radicals can put your skin in a state of oxidative stress. When you are under such stress, skin aging accelerates.

Morris adds, “It mimics the hormone estrogen, which softens the effect of menopause on the skin2.”

It sounds confusing, but here’s why it works: Soy can increase the thickness of your skin improvement of collagen production and microcirculation3 (aka blood flow) and reduces the degradation of your dermal matrix, which he says affects sagging skin and wrinkles.

Morris notes that soybean oil is best for those with dry or sensitive skin because it acts as an occlusive barrier to lock in moisture. “It also contains linoleic acid, which is the building block of ceramides, which can help repair a damaged skin barrier,” he adds.

One study even documents soybean oil protective activity against skin inflammation caused by UVB4, like a sunburn. Morris notes that soybean oil will never replace sunscreen, but it can be a useful boosting ingredient.

Finally, it’s helpful for those with uneven complexions: “This inhibits an enzyme in the pigment product called tyrosinase5so it evens out skin tone and is great for people with dark spots and melasma,” he shares.

One important note is that soybean oil is not best for those with oily or breakout-prone skin, as it can clog pores. But for those with mature skin prone to dryness, it’s great.