innisfree Vitamin C Active Mask 25ml X 5ea
innisfree Vitamin C Active Mask is a sheet mask whose ingredient list carries Magnesium Ascorbyl Phosphate alongside Niacinamide and Allantoin.
No reviews yet- Ships from our California warehouse
- Duties prepaid
- Suited to
- Dehydrated skinSensitive skinDull, uneven tone
- Helps with
- Shoppers looking for Magnesium Ascorbyl Phosphate in a sheet maskRoutines that want Magnesium Ascorbyl Phosphate and Niacinamide in one stepFilling the sheet mask step with a Korean-market formula
In stock. Ships from our California warehouse, dispatched within 2 business days
You’re $100.00 away from free US shipping.
- Duties prepaid
- 30-day returns
- Free US shipping on orders of $100 or more
- Dispatched within 2 business days
Key benefits
- Magnesium Ascorbyl Phosphate, the antioxidant this sheet mask is built around
- Niacinamide and Allantoin on the same list, actives
- Paeonia Suffruticosa Root Extract and Houttuynia Cordata Extract on the same list, plant extracts
- Melaleuca Alternifolia (Tea Tree) Leaf Extract and Artemisia Princeps Leaf Extract further down the same list
- Arginine and Panthenol further down the same list
- Magnesium Ascorbyl Phosphate named seventeenth on the manufacturer list printed on this page
Key actives
Magnesium Ascorbyl Phosphateantioxidant
Magnesium Ascorbyl Phosphate is a stable, water-soluble vitamin C salt. It works at a near-neutral pH, so it suits formulas built for skin that finds pure ascorbic acid stinging. The name on the box points at it, and it is named seventeenth on this sheet mask's own ingredient list.
Niacinamideactive
Niacinamide is vitamin B3, and it is the most studied active in Korean formulation. The panel names it fifth on this sheet mask's list, beside Magnesium Ascorbyl Phosphate.
Allantoinactive
Allantoin is a comfrey-derived compound used to condition skin and soften the outer layer so it feels smoother. It is one of the standard additions to a formula built for easily irritated skin. The panel names it eleventh on this sheet mask's list, beside Magnesium Ascorbyl Phosphate.
Paeonia Suffruticosa Root Extractplant extract
Paeonia Suffruticosa is tree peony, a long-standing East Asian medicinal plant. Its root extract carries paeoniflorin and is used for the look of reddened skin. It is named twenty-first on this sheet mask's list, alongside Magnesium Ascorbyl Phosphate.
Houttuynia Cordata Extractplant extract
Houttuynia Cordata is heartleaf, and it is one of the two or three anchor plants of Korean calming skincare. Its extract carries quercitrin and other flavonoids and is used for the look of redness and blemish-prone skin. The panel names it twenty-third on this sheet mask's list, beside Magnesium Ascorbyl Phosphate.
How to use
- Apply to clean skin following the timing on the pack, then remove or rinse as directed. Most masks in this format are a once- or twice-weekly treatment step rather than a daily one.
Where does this sheet mask go in my routine?
After toner, in place of your serum step, in the evening. Toner goes on before it, and the rest of the routine goes on after you take the sheet mask off. If you are adding it to a routine you already like, give it a week on its own first, so what you see is the Magnesium Ascorbyl Phosphate and not three changes at once.
What else is on the list besides Magnesium Ascorbyl Phosphate?
Niacinamide, Allantoin and Paeonia Suffruticosa Root Extract. The order they are printed in on this sheet mask's panel is the order on the box, so you can see where Magnesium Ascorbyl Phosphate sits relative to them. Further down the same panel: Houttuynia Cordata Extract, Melaleuca Alternifolia (Tea Tree) Leaf Extract and Artemisia Princeps Leaf Extract.
- Ships from
- California
Duties are prepaid. Nothing is owed at delivery. Returns are accepted for 30 days, by mail.
Orders ship from our California warehouse, dispatched within 2 business days, and arrive in 3 to 5 days. Shipping is free on orders of $100 or more.
We split shipments free, so one out-of-stock item never holds up the rest of your order.
Where this unit came from
- 1Seoul
Bought as Korean-market stock - 2Customs
Duty paid by us before it enters the US - 3California
Ships domestically, no international leg
We stock the version of a formula that is sold in Korea, not the release a brand prepares for another market under the same name.
Every unit keeps its original barcode and batch code intact, so the unit in your hands can be checked against the brand’s own records.
Import duties are paid by us before the parcel reaches you, so nothing is owed at the door, and returns run for 30 days.
Every claim on this page traces to the unit in the box, the barcode, the batch code and the price you can read for yourself.
Payment and security
We accept
How it works
The Vitamin C Active Mask is a sheet mask, used after toner, in place of your serum step, in the evening. The antioxidant it is built around is Magnesium Ascorbyl Phosphate, named seventeenth on its own ingredient list. The same list carries Niacinamide, Allantoin and Paeonia Suffruticosa Root Extract, so the antioxidant is not the only thing on it worth naming. How much of the Magnesium Ascorbyl Phosphate stays on the skin, and for how long, is decided by the sheet mask format rather than by the list alone. innisfree sells this Magnesium Ascorbyl Phosphate sheet mask in Korea, and this is that version.
Worth knowing
- Patch test this sheet mask on a small area and wait a day before using it more widely, especially with Magnesium Ascorbyl Phosphate on the list.
- Introduce this sheet mask on its own for the first week, so anything your skin does is traceable to the Magnesium Ascorbyl Phosphate rather than to three changes at once.
Reviews
No reviews yet. Tell us how much you love the product!
Write Reviews (opens in a new tab)Korean-market original
The Original Korean Formula sheet mask from innisfree, formulated with Magnesium Ascorbyl Phosphate and Niacinamide, held in the United States and shipped domestically.
Verify your unit when it arrives
Verify your unit when it arrives
Korean-market stock with the original barcode and batch code intact, exactly as it left Korea.
Match the batch code on the box against the code printed on the bottle or tube itself; the two are stamped separately and should agree.
On the unit itself
- The Korean-market barcode, unaltered from the retail package.
- The manufacturer’s batch code, exactly as the maker printed it.
정품Genuine article, Korean-market stock
What professionals say
What professionals say
What skin-care professionals say about the key actives in this formula, quoted from the medical sources linked beside each.
Using topical vitamin C can result in less cell damage and better-looking skin.
Melissa Piliang, MDDermatologist, Cleveland Clinic Allantoin can tone down the dryness of the individual cells. It increases the water content of the skin, which means it helps to hydrate and moisturize.
Wilma Bergfeld, MDDermatologist, Cleveland Clinic
1 more professional perspective
Niacinamide helps reduce the appearance of pores in a few ways. By strengthening the skin barrier and improving elasticity, pores appear less noticeable and more even.
Ashlyn YankeAesthetician, Cleveland Clinic
Ask an AI assistant about this product
Ask an AI assistant about this product
Opens ChatGPT, Perplexity or Claude in a new tab with the question prefilled. Claude asks you to sign in first.


