COSRX
The Blue Peptide Bakuchiol Plump Glow Serum
A plumping glow serum pairing copper tripeptide with bakuchiol over six peptide entries, niacinamide and hydrolyzed collagen, worn after toner and before moisturizer, morning and evening.
No reviews yet- Ships from our California warehouse
- Duties prepaid
- Suited to
- MatureFine linesSensitiveCompromised barrier
- Helps with
- Fine lines and loss of bounceBarrier weaknessDehydrationEarly environmental damage
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- 30-day returns
- Free US shipping on orders of $100 or more
- Dispatched within 2 business days
How it works
Bakuchiol is what people reach for when they want the look of a smoothing active without the evening-only routine a retinoid asks for. This serum carries it alongside niacinamide and copper tripeptide-1, in a light fluid rather than a cream. It goes on after toner and before moisturizer, morning and evening, and it layers under sunscreen without pilling. Skin that looks flat and slightly uneven, and that has not got on with a retinoid, is the case it fits. Twice a day, every day, and the change it works on is gradual.
Key benefits
- Six peptide entries, led by copper tripeptide (GHK-Cu)
- Bakuchiol brings gentle plant-derived smoothing without the adjustment period
- Niacinamide sits fifth on the list for tone support
- Beta-glucan and hydrolyzed collagen back the plump, glassy finish
Key actives
Copper Tripeptide (GHK-Cu)
the blue peptide the line is named for
Bakuchiol
a gentle plant-derived smoothing active
Niacinamide
supports a brighter, more even look
Beta-Glucan
a soothing hydrator for reactive skin
COSRX The Blue Peptide Bakuchiol Plump Glow Serum
What does 'blue peptide' refer to on this serum's actual ingredient list?
The named ingredient behind the blue peptide branding is copper tripeptide-1, listed as GHK-Cu, which sits in the list alongside four additional peptides: acetyl hexapeptide-1, acetyl heptapeptide-4, acetyl hexapeptide-8, and acetyl octapeptide-3. Niacinamide comes earlier, fifth on the list, and bakuchiol appears roughly midway. Together they form a peptide-forward formula built around plumping and smoothing rather than a single named active.
Does this serum contain alcohol or silicone that could bother my skin?
Yes to both: alcohol appears in the middle of the ingredient list and dimethicone appears earlier, so this is not an alcohol-free or silicone-free formula. Neither is flagged as denatured alcohol specifically, but anyone avoiding either ingredient category in general should check the position carefully before choosing this serum. The formula does not carry added fragrance or essential oil, which are the two most common separate irritant categories in a serum like this.
How long before bakuchiol and the peptides show a visible effect?
Bakuchiol and the five named peptides work through repeated application rather than delivering a change after one or two uses, since both ingredient classes are associated with gradual, cumulative support rather than an immediate result. Hydrolyzed collagen and beta-glucan further down the list support the plumping feel in the meantime. Using it consistently, morning and night, for several weeks is the realistic window before assessing whether skin looks smoother or more resilient.
Can I use this alongside a retinoid product, given it contains bakuchiol?
Bakuchiol is often used as a gentler alternative to a retinoid, and nothing on this ingredient list is a direct retinoid itself, so pairing it with a separate retinol product would mean using two similar-acting ingredients rather than a conflicting combination. Sodium hyaluronate and hyaluronic acid further down the list support hydration if a retinoid is also part of the routine. Introducing them on alternating nights rather than the same session is a reasonable way to gauge tolerance.
How can I verify this serum is the genuine Korean-market formula?
COSRX authenticates units through its own system rather than a third party: the verification page on cosrx.com asks for the batch number and expiration date printed on your unit's box. Reading those codes directly off your own packaging, instead of trusting a seller's listing, is the actual safeguard the system is built around. This bottle does not carry a barcode we can confirm here, so the batch and expiration codes on the box are the check to rely on.
- 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 Blue Peptide Bakuchiol Plump Glow Serum after toner and before moisturizer, morning and evening.
- One pump for the face and neck, pressed in with flat palms rather than rubbed around.
- Toner first, this second, then moisturizer, and sunscreen last in the morning.
- Twice a day. Do not use it in the same routine as a retinoid; the two do the same kind of work and one at a time is enough.
Worth knowing
- Collagen here is not plant-derived, so this is not a vegan formula.
Reviews
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Write Reviews (opens in a new tab)COSRX, Korean-market original
Peptide bakuchiol serum with Copper Tripeptide and Niacinamide.
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.
COSRX verifies units itself. Find the verification page on cosrx.com and enter the batch number and expiration date printed on your unit. Read them off the package rather than from us, which is the point.
Source: COSRX FAQ
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.
Peptides can be anti-inflammatory, and chronic inflammation damages the tissue in your skin.
Wilma Bergfeld, MDDermatologist, Cleveland Clinic Bakuchiol is often used as a gentler alternative to retinol. It may help your skin look smoother and reduce the appearance of wrinkles.
Shilpi Khetarpal, 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
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