COSRX Aloe 54.2 Aqua Tone-up Sunscreen SPF 50+ PA++++ 50ml
COSRX's Aloe 54.2 Aqua Tone-Up Sunscreen is 50 ml, used as the last step of the morning routine.
No reviews yet- Ships from our California warehouse
- Duties prepaid
- Suited to
- DryDehydratedSensitiveCompromised barrier
- Helps with
- DehydrationBarrier weaknessEarly environmental damageUneven tone and dullness
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
How it works
This sunscreen from COSRX leads with Butylene Glycol, a multifunctional glycol that carries moisture and helps preserve the formula. Further down the list sits Niacinamide and Sodium Hyaluronate, rounding the formula out. It is formulated and sold here as the Korean-market version, the same formula stocked in Korea, rather than a US-shelf reformulation, and it slots into a routine at the sunscreen step, used consistently rather than as a one-off treatment.
Key benefits
- On this formula's own list, Butylene Glycol shows up near the top. It is a multifunctional glycol that carries moisture and helps preserve the formula.
- This one's ingredient list carries Niacinamide in the first half, a brightening, sebum-regulating amide that also reinforces the skin barrier.
- Sodium Hyaluronate sits toward the end of the list on this product's own ingredient list, a low-weight hyaluronate that draws water into the surface layers.
Key actives
Butylene Glycol
a multifunctional glycol that carries moisture and helps preserve the formula
Niacinamide
a brightening, sebum-regulating amide that also reinforces the skin barrier
Sodium Hyaluronate
a low-weight hyaluronate that draws water into the surface layers
Allantoin
a soothing agent that supports comfort on sensitised skin
Is this the same formula sold in Korea, or a US-reformulated version?
This is COSRX's Korean-market formula, the same version sold in Korea, not a separate US-shelf reformulation. and the Korean-market packaging and batch coding stay intact on the unit you receive.
What does Butylene Glycol do in this formula?
Butylene Glycol is a multifunctional glycol that carries moisture and helps preserve the formula. It appears on this product's own ingredient list, and its position on that list reflects how the formula is built around it.
- 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 to use
- Use the Aloe 54.2 Aqua Tone-Up Sunscreen as the last step of the morning routine, over moisturizer, or in place of foundation.
- Apply an appropriate amount on skin at the last step of AM skincare routine.
- Moisturizer first, this last. Powder or blush can go over it once it has set for a minute.
- Every morning you want the finish. Do not apply it in one thick pass to get more cover; two thin layers sit flatter and last longer.
Reviews
No reviews yet. Tell us how much you love the product!
Write Reviews (opens in a new tab)We’re on gram!
Creators trying on authentic Korean skincare routines and products from us.
Rating a shelf of Dr. Althea products one by one.
Jasmine Loo · YouTube
Two hydrating serums side by side, IUNIK and Dr. Althea.
Kristin · YouTube
A walk through the Dr. Althea serum lineup and who each one suits.
auraofmahmuda · YouTube
A blunt first take on the Dr. Althea range.
Lexi Chang · YouTube
A first look at the viral 345 Relief Cream before buying.
Shelley Nayak · YouTube
A first try of the Dr. Althea serum on camera.
Hannah Ziad · YouTube
Korean-market original
COSRX Sunscreen, 50ml, built on Butylene Glycol.
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 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.







