Dr.G RTX INTO SERUM Peptishot 50ml
RTX INTO SERUM Peptishot is Dr.G's ampoule serum (50ml), built around Niacinamide and Squalane. It is used after toner and before moisturizer, as the routine's concentrated treatment step. This is over-labeled in English for US sale rather than reformulated for the US market.
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- Suited to
- Dry skinCompromised barrierDehydrated skinSensitive skin
- Helps with
- Shoppers looking for Niacinamide in a serumRoutines that want Niacinamide and Hydrolyzed Sponge in one stepFilling the serum step with a Korean-market formulaAnyone who wants the Niacinamide serum sold on Korean shelves
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- 30-day returns
- Free US shipping on orders of $100 or more
- Dispatched within 2 business days
How it works
The RTX INTO SERUM Peptishot is a 50ml serum, used after toner and before moisturizer, morning and evening. The active it is built around is Niacinamide, named sixth on its own ingredient list. The same list carries Hydrolyzed Sponge, Adenosine and Retinal, so the active is not the only thing on it worth naming. How much of the Niacinamide 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 Dr.G sells in Korea, Niacinamide and all.
Key benefits
- Niacinamide, the active this serum is built around
- Hydrolyzed Sponge, Adenosine and Retinal on the same list, actives
- Copper Tripeptide-1 on the same list, a peptide
- Haematococcus Pluvialis Oil and Tocopherol further down the same list
- Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate and Cholesterol further down the same list
- Niacinamide named sixth on the manufacturer list printed on this page
Key actives
Niacinamideactive
Niacinamide is vitamin B3, and it is the most studied active in Korean formulation. On this serum's own ingredient list it is named sixth.
Hydrolyzed Spongeactive
Hydrolyzed Sponge is processed freshwater sponge, which carries fine silica spicules. In a formula it works as a mild physical exfoliant. The panel names it thirteenth on this serum's list, beside Niacinamide.
Adenosineactive
Adenosine is a nucleoside that Korea's own cosmetic authority recognises as a wrinkle-care functional ingredient, which is why it appears on so many Korean lists at a low level. It is used for the look of fine lines and is stable and well tolerated. The panel names it twenty-second on this serum's list, beside Niacinamide.
Retinalactive
Retinal is retinaldehyde, a vitamin A derivative one chemical step closer to retinoic acid than retinol is. It is yellow-orange and unstable in light, so products carrying it are usually opaque. The panel names it thirty-fourth on this serum's list, beside Niacinamide.
Copper Tripeptide-1peptide
Copper Tripeptide-1 is three amino acids bound to a copper ion, and the classic firming peptide in cosmetic chemistry. It is blue in solution, which is often why a serum carrying it is tinted, and it is used for the look of firmness and fine lines. It is named thirtieth on this serum's list, alongside Niacinamide.
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 Niacinamide and not three changes at once.
Is this the Korean-market serum or a US version?
The Korean-market one, Niacinamide 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.
What else is on the list besides Niacinamide?
Hydrolyzed Sponge, Adenosine and Retinal. The order they are printed in on this serum's panel is the order on the box, so you can see where Niacinamide sits relative to them. Further down the same panel: Copper Tripeptide-1, Haematococcus Pluvialis Oil and Tocopherol.
- 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 to use
- Apply it after your toner, while the face is still slightly damp, so a thin layer spreads without dragging.
- Three or four drops cover the whole face; press it in with the flats of the fingers rather than rubbing.
- Follow with a moisturizer within a minute so the thin layer has something holding it down.
- Do not stack it under a second serum doing the same job, since more layers is not the same as more result.
Worth knowing
- Patch test this serum on a small area and wait a day before using it more widely, especially with Niacinamide on the list.
- Retinal is on this list, so keep this serum to the evening and build the nights up slowly rather than starting nightly.
Reviews
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Korean-market original
RTX INTO SERUM Peptishot, 50ml, Dr.G's ampoule serum with Niacinamide and Squalane.
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.
Vitamin A has a molecular structure that's tiny enough to get into the lower layers of your skin, where it finds and boosts collagen and elastin, which is a protein that strengthens your skin's flexibility.
Wilma Bergfeld, MDDermatologist, Cleveland Clinic In skin, different peptides can encourage different things, from collagen formation to a reduction in inflammation to helping with wound healing depending on their structure.
Whitney Hovenic, MDDouble board-certified dermatologist and Mohs surgeon, Women's Health
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
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