Today, I'm going to discuss my No. 1 vitamin C serum pick: SkinCeuticals Serum 10 AOX+.
In short, Serum 10 AOX+ is a more budget-friendly version of C E Ferulic (at less than half price) with much of the same formulation parameters and expected benefits for your skin.
So does this product live up to the bestselling SkinCeuticals C E Ferulic? Let's find out. ⭐
If you've done any research on vitamin C serums, you'll know that SkinCeuticals C E Ferulic is one of the most highly recommended products among dermatologists and beauty editors alike.
However, the main issue with C E Ferulic, is not its outstanding formulation, but its outstanding price, which makes this popular vitamin C serum out-of-reach for most people (currently retails for $166).
If you've ever wondered why SkinCeuticals C E Ferulic is so damn expensive, here is my theory:
By holding this patent, SkinCeuticals can prevent competitors from creating vitamin C serums with similar formulations (i.e. 10-20% L-ascorbic acid, cinnamic acids, and vitamin E, at a pH below 3.5).
In fact, SkinCeuticals recently filed a lawsuit against Drunk Elephant in 2018 over allegations that the brand's popular C-Firma Day Serum violated the Duke Antioxidant Patent (source: The Fashion Law).
Alright, so back to my theory on SkinCeuticals C E Ferulic: once the patent expires in 2025, other competitors will be able to freely replicate the original formula and sell "knock-off" versions of this vitamin C serum (much like how generic drugs are way cheaper than brand name ones).
That's why SkinCeuticals is charging an arm-and-a-leg for its products today, while it's still covered by patent protection, before competitors like Drunk Elephant move in with their own versions.
But this review is not for SkinCeuticals C E Ferulic (even if I did spend 90% of my time on it). As I said earlier, C E Ferulic is just too expensive for most consumers, even as an occasional splurge.
Instead, I'm recommending the lesser-known (yet still very effective) SkinCeuticals Serum 10 AOX+ which currently retails for less than half the price of C E Ferulic! ($70 at the time of this review)
The Serum 10 AOX+ features 10% L-Ascorbic Acid and 0.2% Ferulic Acid for powerful antioxidant protection against environmental stressors like UVA/UVB radiation and free radical damage.
It's the perfect daytime vitamin C serum for brightening dark spots, improving uneven skin tone, and reducing common signs of aging like sun spots, wrinkles, and fine lines.
The best part is that Serum 10 AOX+ is also formulated according to the Duke Antioxidant Patent (notably, at a pH below 3.5 which is required for vitamin C to penetrate your skin). That means you get to enjoy an effective formulation based on years of research for a fraction of the price.
In addition, users shared some of the common drawbacks to Serum 10 AOX+, including how:
My Verdict: If you want the best vitamin C serum on the market, you really can't go wrong with the classic SkinCeuticals C E Ferulic (just make sure you buy from an authorized retailer like Dermstore). But if you're looking for a balance between effective formulation and reasonable affordability, I'd recommend SkinCeuticals Serum 10 AOX+ as the better vitamin C serum for most people.
Bonus Tip: If you want a stronger vitamin C serum, check out SkinCeuticals Serum 20 AOX+.