At a glance
Texture — Lightweight water-based serum
Key Active — Potassium azeloyl diglycinate (a derivative — not azelaic acid)
Best For — Sensitive skin that cannot tolerate real azelaic acid
Price Tier — $$
What stands out
It is cosmetically far nicer than real azelaic acid, and that is not a trivial advantage. No grit, no pilling, no white cast, no sting — the texture problems that make The Ordinary's version so unpleasant simply do not exist here.
Potassium azeloyl diglycinate is water-soluble and gentle, which is what makes that possible.
Niacinamide is also in the formula, and niacinamide has genuinely good independent evidence for barrier support, oil control and pigmentation.
If real azelaic acid has defeated you, this is a reasonable thing to try — as long as you know what it is.
Watch out for
There is no azelaic acid in this product.
The active is potassium azeloyl diglycinate — a derivative. It is a different molecule, and you cannot transfer azelaic acid's evidence to it. That Cochrane review grading azelaic acid as high-quality evidence for rosacea? It does not apply here.
The evidence for the derivative itself is thin. The few studies that exist tested it combined with other actives, so its independent effect cannot be separated out.
Naturium has renamed the product — it used to be "Azelaic Topical Acid 10%," and it is now "Azelaic Acid Derivative Complex 10%." That change is an admission, and it is to their credit that they made it. But a great many people bought this thinking they were buying azelaic acid.
The "10%" refers to the derivative, not to azelaic acid.
$20 for a derivative — when $12 buys the real thing.
Key ingredients
🧪 Azelaic Acid (10%) — brightens and calms
🍊 Vitamin C — brightens and improves skin tone
🌿 Niacinamide — calms skin + strengthens barrier
Full ingredient list
Formulation Notes
"Derivative" is the word to watch for, and it means the same thing everywhere in skincare.
A derivative is a different molecule that is supposed to convert into the active one, or behave like it. Sometimes that works. Often the evidence that it converts in useful amounts is thin or absent.
We have now seen this pattern three times on this site: vitamin C derivatives standing in for L-ascorbic acid, retinyl esters standing in for retinol, and now an azelaic acid derivative standing in for azelaic acid.
In every case the derivative is gentler, and in every case the evidence is weaker. That is a real trade, and it can be the right one. But you should know you are making it.