COSRX The Hyaluronic Acid 3 Serum 20mL
코스알엑스 더 히알루론산 3 세럼 20ml
₩ is the Korean store price; $ is what Olive Young Global lists. They often differ because the pack size or count sold overseas isn't the same — check the size on the listing before you buy.
Not a cart — nothing is sold here. I check it against what you already use: clashing actives, doubling up, and morning vs night.
Fit with your routine
Add a few more to your routine and we'll flag any clashing actives or good pairings with this one.
About this product
This serum is built around multiple molecular weights of hyaluronic acid to draw moisture into skin at different depths, kept in a lightweight, fast-absorbing base with propanediol and pentylene glycol. It contains a small amount of alcohol, so it's not the pick for very reactive skin, but for most combo skin types it layers easily under moisturizer. Best for combo skin wanting a quick, lightweight hydration step without heaviness.
Pat a few drops onto damp skin after toner and before moisturizer, morning and night.
What reviewers say
This is a straightforward hydration serum, no frills, and it does exactly what it says. It sinks in fast and preps my skin nicely for whatever comes next. It does list alcohol on the ingredient panel, so if you're avoiding that, check the full list first.
Asked which skin it worked for, 51% of reviewers picked combination (dry 49%, oily 0%).
51% called it gentle on their skin.
These add up to 100 — it's which answer people chose, not a score out of 100. It tells you who liked it, which isn't the same as what will suit you.
Ingredients
Ingredients to watch
Fragrance, drying alcohol, essential oils, etc.Does this fit what you already use?
Add it and I'll check it against the rest — clashing actives, doubling up, and which half of the day each one belongs in.
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