# COSRX The Blue Peptide Bakuchiol Plump Glow Serum Peptide bakuchiol serum with Copper Tripeptide and Niacinamide. - Brand: COSRX - Product: The Blue Peptide Bakuchiol Plump Glow Serum - Price: $25.99 - Availability: Out of stock - Market: Korean market, the version sold in Korea - Made in: Republic of Korea - Category: Serums & Ampoules ## 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 ## 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. ## How to use 1. Use the Blue Peptide Bakuchiol Plump Glow Serum after toner and before moisturizer, morning and evening. 2. One pump for the face and neck, pressed in with flat palms rather than rubbed around. 3. Toner first, this second, then moisturizer, and sunscreen last in the morning. 4. 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. ## Ingredients AQUA/WATER, BUTYLENE GLYCOL, GLYCERIN, DIPROPYLENE GLYCOL, NIACINAMIDE, 1,2-HEXANEDIOL, BETAINE, DIETHOXYETHYL SUCCINATE, AMMONIUM ACRYLOYLDIMETHYLTAURATE/VP COPOLYMER, DIMETHICONE, COPPER TRIPEPTIDE-1(GHK-Cu), POLYGLYCERYL-6 CAPRYLATE, POLYGLYCERYL-4 CAPRATE, BAKUCHIOL, HYDROGENATED LECITHIN, ALCOHOL, SODIUM METHYL STEAROYL TAURATE, ETHYLHEXYLGLYCERIN, HYDROXYPROPYL STARCH PHOSPHATE, DISODIUM EDTA, ADENOSINE, CAPRYLYL GLYCOL, TOCOPHEROL, DIPEPTIDE DIAMINOBUTYROYL BENZYLAMIDE DIACETATE, ACETYL HEXAPEPTIDE-1, ACETYL HEPTAPEPTIDE-4, PANTHENOL, INOSITOL, ACETYL HEXAPEPTIDE-8, SODIUM HYDROXIDE, PROPANEDIOL, BETA-GLUCAN, SODIUM HYALURONATE, HYALURONIC ACID, SODIUM HYALURONATE CROSSPOLYMER, HYDROLYZED COLLAGEN, HYDROLYZED HYALURONIC ACID, SODIUM ACETYLATED HYALURONATE, ACETYL OCTAPEPTIDE-3 ## FAQ ### 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. --- Page: https://korean-pharmacy.com/products/cosrx-cosrx-the-blue-peptide-bakuchiol-plump-glow-serum