heimish RX Hyaluronic Acid 2% Hydrating Serum 35ml
Heimish RX Hyaluronic Acid 2% Hydrating Serum is a 35ml serum whose ingredient list carries Sodium Hyaluronate alongside Glycereth-25 PCA Isostearate and Panthenol.
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- Suited to
- dull, uneven-tone skindry, dehydrated skinskin looking to layer a targeted step under moisturizer
- Helps with
- dullness and an uneven-looking tonedehydration sitting under a moisturizer that cannot fix it alonea lack of bounce in tired-looking skin
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Key benefits
- Sodium Hyaluronate, the humectant this serum is built around
- Glycereth-25 PCA Isostearate on the same list, an emollient
- Panthenol, Ectoin and Hydrolyzed Hyaluronic Acid on the same list, humectants
- Hyaluronic Acid and Potassium Hyaluronate further down the same list
- Sodium Hyaluronate named fifth on the manufacturer list printed on this page
- The Korean-market release of this serum, confirmed against its Korean barcode
Key actives
Sodium Hyaluronatehumectant
Sodium Hyaluronate is the salt of hyaluronic acid, and it is what most products labelled hyaluronic actually contain. The salt dissolves more readily and the molecule is smaller, so it sits in the outer layer of skin rather than only on top of it. The name on the box points at it, and it is named fifth on this serum's own ingredient list.
Glycereth-25 PCA Isostearateemollient
Glycereth-25 PCA Isostearate is a water-dispersible emollient that softens skin and helps oils and water stay mixed. It reads as light rather than rich on the skin. The panel names it seventh on this serum's list, beside Sodium Hyaluronate.
Panthenolhumectant
Panthenol is pro-vitamin B5: skin converts it to pantothenic acid. It is a humectant that holds water and leaves skin feeling soft and less tight, and it is one of the ingredients formulators reach for when a formula also contains something harsh. It is named sixth on this serum's list, alongside Sodium Hyaluronate.
Ectoinhumectant
Ectoin is a small molecule that microbes in salt flats and hot springs make to survive extreme conditions. In skincare it holds water tightly around itself, which is why it appears in formulas aimed at reactive, easily dehydrated skin. The panel names it tenth on this serum's list, beside Sodium Hyaluronate.
Hydrolyzed Hyaluronic Acidhumectant
Hydrolyzed Hyaluronic Acid is hyaluronic acid cut into much shorter fragments. The smaller the fragment, the further into the outer layer it can settle, which is why serums stack several sizes together instead of using one. It is named twelfth on this serum's list, alongside Sodium Hyaluronate.
How to use
- After toner, while skin is still slightly damp, apply RX Hyaluronic Acid 2% Hydrating Serum 35ml to the face and neck.
- Press gently with your palms rather than rubbing, so it has a moment to absorb.
- Follow with moisturiser once it has sunk in.
Where does this serum go in my routine?
After toner and before moisturizer, morning and evening. Anything thinner than a serum goes on before it, and anything richer goes on after. 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 Sodium Hyaluronate and not three changes at once.
Is this the Korean-market serum or a US version?
The Korean-market one, Sodium Hyaluronate and all. We match this serum to its Korean barcode before it reaches the shelf, which is the check that tells you which market release you are holding.
Does this serum contain fragrance?
Yes. The ingredient list names Fragrance and Parfum. They sit on the panel printed on this page, so you can read the position for yourself before you buy. If fragrance components are something you avoid, this serum is not the one.
What else is on the list besides Sodium Hyaluronate?
Glycereth-25 PCA Isostearate, Panthenol and Ectoin. The order they are printed in on this serum's panel is the order on the box, so you can see where Sodium Hyaluronate sits relative to them. Further down the same panel: Hydrolyzed Hyaluronic Acid, Hyaluronic Acid and Potassium Hyaluronate.
- 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
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How it works
The RX Hyaluronic Acid 2% Hydrating Serum is a 35ml serum, used after toner and before moisturizer, morning and evening. The humectant it is built around is Sodium Hyaluronate, named fifth on its own ingredient list. The same list carries Glycereth-25 PCA Isostearate, Panthenol and Ectoin, so the humectant is not the only thing on it worth naming. How much of the Sodium Hyaluronate stays on the skin, and for how long, is decided by the serum format rather than by the list alone. This is the Original Korean Formula, the serum Heimish sells in Korea, Sodium Hyaluronate and all.
Worth knowing
- This step is not a substitute for a dedicated sunscreen, which should still be the last step of the morning routine.
- Pregnant or breastfeeding shoppers should run any new skincare step past their own physician before adding it.
- New actives, including this one, are best patch tested on the inner arm before a first full-face use.
Reviews
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Korean-market original
The Original Korean Formula serum from Heimish, 35ml formulated with Sodium Hyaluronate and Glycereth-25 PCA Isostearate, 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.
Hyaluronic acid helps bind water to collagen, which traps water in the skin. That helps make the skin more plump and full-looking.
Samantha Stein, PA-CDermatology physician assistant, Cleveland Clinic Pantothenol is a common ingredient in skin care and hair products I recommend, particularly for people who are prone to dryness.
Taylor Bullock, MDDermatology resident, Cleveland Clinic
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