Round Lab Azelaic Acid Serum: What to Know Before You Buy
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Azelaic acid has become one of the most talked-about ingredients in K-beauty routines, and Round Lab, the Korean brand many fans know from its 1025 Dokdo and Birch lines, now has its own take: the Azelaic Acid Serum. It is listed at $20.99 on Round Lab's US store at the time of writing. Here is what the brand's product page actually says, and how the serum could slot into an everyday routine.
What Round Lab says about it
According to Round Lab, this is a 12% Azelaic Acid serum made to calm the look of redness and breakouts and to fade the appearance of dark spots, while staying gentle enough for sensitive skin. The brand highlights three parts of the formula:
- 12% Azelaic Acid – Round Lab says it helps visibly reduce the look of active breakouts and redness and improves the appearance of post-breakout marks, dark spots and uneven texture.
- Patented Beta-Glucan – described as working alongside the azelaic acid to help minimize sensitivity.
- 10 types of Hyaluronic Acid – included for comfortable, lasting hydration, so the acid step does not feel drying, according to the brand.
The ingredient list also includes Panthenol, Allantoin, Tranexamic Acid and Centella Asiatica actives (Madecassoside and Asiaticoside), which Round Lab says add soothing and brightening support. The texture is described as lightweight, fast-absorbing and non-greasy.
Where it fits in a routine
In the classic K-beauty order of cleanse → toner → serum → cream → sunscreen, this sits in the serum step. Round Lab's directions are specific:
- After toner, apply 1–2 drops to the face and gently pat in.
- Start 1–2 times per week, then gradually build up to daily use (up to 5 drops as needed).
- Follow with a moisturizer.
- Always apply sunscreen during the day.
The brand also gives a useful tip: because the azelaic acid concentration is high, applying too much may leave a slight white cast. A pea-sized amount followed by moisturizer or sunscreen is the suggested fix.
Who it might suit
Round Lab lists the serum as good for sensitive skin prone to redness, oily or blemish-prone skin, visible dark spots and post-breakout marks, and uneven tone and texture. The light, non-greasy finish is noted as suiting oily skin in particular. If you already use a gentle Round Lab toner and cream, this could be the "active" step that sits between them.
What to check before you buy
- Patch test first. Any acid serum can feel different on different skin, even one described as gentle. Try a small amount on a patch of skin before using it on your whole face, and follow the slow start the brand recommends.
- Read the full INCI. Round Lab publishes the full ingredient list on the product page, so check it if you know you react to specific ingredients.
- Size. The product information we collected does not state the bottle size, so confirm it on the brand page.
- Price and shipping. $20.99 is the US store price at the time of writing. Check the current price and whether Round Lab ships to your country before ordering.
- Sunscreen. Round Lab's own instructions pair this with daily sunscreen, so plan for that step.
Our take
On paper, Round Lab's Azelaic Acid Serum is a straightforward option for anyone curious about azelaic acid who also wants hydration and soothing ingredients in the same bottle. The brand's clear "start slow" directions and the white-cast tip are helpful details for beginners. We have not tested it ourselves, so treat this as a summary of Round Lab's own information, patch test, and go at your skin's pace.
See Azelaic Acid Serum at Round Lab →
Information is based on Round Lab's product page as collected by KPOPORO. Details can change; please confirm on the brand page before buying.