Squalene: The Good, the Bad, and the Peroxide

Squalene is a natural moisturizer found in our skin’s sebum (fancy word for oil). In its natural state, squalene is a hero for skin hydration, but when it oxidizes (reacts with oxygen in the environment), it transforms into squalene peroxide, and that’s when trouble starts brewing. Studies have found that squalene peroxide can increase irritation on the scalp, causing inflammation, dryness, and—you guessed it—those pesky flakes associated with seborrheic dermatitis​

In simpler terms: squalene is like that friend who’s great at parties but becomes a problem after one too many drinks. When it’s oxidized, squalene turns into a major irritant that disrupts your skin barrier and invites more inflammation, which worsens SD symptoms​

Antioxidants: The Skin's Superheroes

Now, here’s where things get interesting (and hopeful!). Research has shown that antioxidants can be a game-changer in preventing the oxidation of squalene. Antioxidants are like the skin's bouncers, keeping squalene from going rogue and turning into its harmful peroxide form. So, if you’re loading up your skincare products with antioxidants—like vitamin E, vitamin C, and even green tea extracts—you’re basically setting up a defense squad to keep squalene in check

How to Incorporate This Into Your Skincare Routine

Look for products that not only contain squalene (because, remember, in its unoxidized form, it's actually super moisturizing) but also come packed with antioxidants. The right combo can hydrate your skin while also protecting it from oxidative stress. If you have seborrheic dermatitis, this might help you keep inflammation down and those flakes at bay.

Pro-tip: Check product labels for ingredients like “tocopherol” (vitamin E) or “ascorbic acid” (vitamin C). These antioxidants help maintain squalene’s good side, keeping your skin smooth and irritation-free.

Wrapping It Up: Squalene, Your Frienemy?

So, here’s the takeaway: squalene is naturally good for your skin, but when it oxidizes, it can make seborrheic dermatitis worse. The trick is to protect it from oxidation with antioxidants, which could give your skin the relief it needs from the redness and flakiness. In skincare, it’s all about balance—keeping the good oils doing their job while stopping them from turning into skin saboteurs.

By focusing on antioxidants in your skincare routine, you may help prevent squalene peroxidation and soothe the symptoms of seborrheic dermatitis. It's not a magical cure, but it's a scientifically backed way to work with your skin, rather than against it.