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COSRX The Blue Copper Peptide Serum & Cream Duo - Blue Copper Peptide Serum 1.69 fl oz + Blue Copper Peptide Cream 1.76 oz.
COSRX The Blue Copper Peptide Serum & Cream Duo - Blue Copper Peptide Serum 1.69 fl oz + Blue Copper Peptide Cream 1.76 oz.
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Copper Peptide · GHK-Cu
The Blue Copper Peptide Serum & Cream Duo
The Blue Copper Peptide Serum & Cream Duo
Firmer, Plumper, More Radiant Skin — From the Inside Out
Powered by the naturally blue-hued Copper Tripeptide-1 (GHK-Cu) alongside a multi-peptide complex, this duo is formulated to visibly improve the look of early signs of aging while boosting firmness and glow. The serum delivers active ingredients deep into skin, while the cream locks everything in and seals moisture — together they create a plump, bouncy, "glass skin" finish.
Lightweight, fast-absorbing textures that layer beautifully into your AM/PM routine. Formulated to be gentle enough for sensitive skin, with no greasy or tacky residue.
✔ 0.5% Copper Peptide (5,000ppm)
✔ Serum + Cream 2-Step Set
✔ Sensitive-Skin Friendly
✔ Made in Korea
Why You'll Love It
The One Duo Your Routine Is Missing
Four core benefits, from firmness to hydration, working together to target multiple skin concerns at once
Visibly Firms & Plumps
The naturally blue-hued Copper Tripeptide-1 (GHK-Cu) helps visibly improve early signs of aging for a firmer, more resilient-looking complexion.
Deep, Lasting Hydration
Hyaluronic Acid and multiple humectants work together to lock in moisture, leaving skin looking dewy, plump, and never dry.
Strengthens the Skin Barrier
Ceramides and Cholesterol help reinforce skin's natural moisture barrier, supporting a calmer, more comfortable complexion less prone to redness.
Brightens & Evens Tone
Niacinamide works alongside the peptide complex to help visibly improve the look of uneven tone and dullness for a brighter, glass-like glow.
Real Results
Consistency Shows On Your Skin
Many customers report visibly firmer, more radiant, and smoother-looking skin after 2–4 weeks of consistent use
Before · Dull, uneven texture, visible fine lines
After Consistent Use · Firmer, glowing, smoother-looking skin
D1
Instant Hydration
Lightweight, fast-absorbing texture leaves skin feeling soft and glowing from the very first use.
W1
Redness Calms
After one week of consistent use, visible redness and sensitivity feel noticeably more settled.
W2
Firmness Improves
Around two weeks in, skin starts to look more lifted and firm, with pores appearing more refined.
W4
Plump & Radiant
By four weeks, skin looks bouncy, plump, and hydrated — that signature "glass skin" glow.
Ingredient Spotlight
Every Drop, Backed by Science
Carefully selected active ingredients formulated for firmness, hydration, and barrier repair
Cu
Copper Tripeptide-1 (GHK-Cu)
A naturally blue-hued peptide that occurs in the human body, known for its antioxidant and soothing properties. Helps visibly improve the look of early signs of aging and supports a firmer, more resilient complexion.
Hero ActiveNa
Niacinamide
A skincare staple known for helping visibly improve the look of uneven tone and dullness, while also supporting balanced-looking skin — for a brighter, more radiant complexion.
BrighteningCe
Ceramide + Cholesterol Complex
Key lipids that mimic skin's natural barrier structure, helping to reinforce the moisture barrier, reduce water loss, and ease dryness-related sensitivity.
Barrier RepairHA
Hyaluronic Acid / Sodium Hyaluronate
Multiple molecular weights of Hyaluronic Acid work together to deliver instant hydration and support long-lasting moisture, for skin that feels plump and supple.
Deep Hydration
Duo Details
Texture · Packaging · Details
How To Use
Two Simple Steps, Fold Right Into Your Routine
1
Cleanse & Tone
Start with a clean face and your favorite toner to prep skin for absorption.
2
Apply the Serum
Dispense a few drops and gently pat into skin, avoiding the eye area, until fully absorbed.
3
Layer the Cream
Follow with an even layer of cream to seal in the serum's active ingredients and reinforce hydration.
4
Use AM & PM
For best results use twice daily, and always follow your morning routine with SPF.
Serum + Cream: Better Together
The serum delivers active ingredients deep into skin to visibly improve firmness and radiance; the cream locks it all in and reinforces the moisture barrier. Used together, this duo outperforms either product used alone.
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