Excellent quality, not reactions, easy
"Excellent quality, not reactions, easy to use and great service on the web site shop"
10% off
24-HR Synergy Duo
24HR Protect your skin from Seasonal Change
Here're our best Synergy Duo! AM/PM all day for enjoying our high effective #DermSkinCare.
We heard your voice with skin problems, you and us will be GOOD Synergy for build the skin-barrier
$45.20
$50.00
Shop easier with
[/Acne Free/]
• The Niacinamide 15 Serum 20ml / 0.67 fl. oz
Highly concentrated serum that combines the maximum concentration of niacinamide with optimal ratios of synergistic ingredients for total acne control.
• The Hyaluronic Acid 3 Serum 20ml / 0.67 fl. oz
Highly concentrated 3% hyaluronic acid serum that hydrates, plumps, soothes and supports the skin's moisture barrier.
[/Brightening/]
• The Vitamin C 23 Serum 20ml / 0.67 fl. oz
A highly concentrated serum that fades acne scars and brightens the complexion to revitalize dull and dry skin.
• The Hyaluronic Acid 3 Serum 20ml / 0.67 fl. oz
Highly concentrated 3% hyaluronic acid serum that hydrates, plumps, soothes and supports the skin's moisture barrier.
[/Increase Elasticity/]
• The Retinol 0.5 Oil 20ml / 0.67 fl. oz
For intermediate-level retinol users looking for a highly concentrated, youth booster.
• The Hyaluronic Acid 3 Serum 20ml / 0.67 fl. oz
Highly concentrated 3% hyaluronic acid serum that hydrates, plumps, soothes and supports the skin's moisture barrier
[/Skin Firming/]
The Retinol 0.1 Cream 20ml / 0.67 fl. oz
An irritation-reduced solution created with the optimal ratio of key ingredients for first-time retinol users just starting to notice the appearance of fine lines caused by dry skin.
• The Hyaluronic Acid 3 Serum 20ml / 0.67 fl. oz
Highly concentrated 3% hyaluronic acid serum that hydrates, plumps, soothes and supports the skin's moisture barrier
Check out the product detail pages :
• The Hyaluronic Acid 3 Serum →
• The Niacinamide 15 Serum →
• The Vitamin C 23 Serum →
• The Retinol 0.5 Oil →
• The Retinol 0.1 Cream →
[/Acne Free/]
• The Niacinamide 15 Serum 20ml / 0.67 fl. oz
Highly concentrated serum that combines the maximum concentration of niacinamide with optimal ratios of synergistic ingredients for total acne control.
• The Hyaluronic Acid 3 Serum 20ml / 0.67 fl. oz
Highly concentrated 3% hyaluronic acid serum that hydrates, plumps, soothes and supports the skin's moisture barrier.
[/Brightening/]
• The Vitamin C 23 Serum 20ml / 0.67 fl. oz
A highly concentrated serum that fades acne scars and brightens the complexion to revitalize dull and dry skin.
• The Hyaluronic Acid 3 Serum 20ml / 0.67 fl. oz
Highly concentrated 3% hyaluronic acid serum that hydrates, plumps, soothes and supports the skin's moisture barrier.
[/Increase Elasticity/]
• The Retinol 0.5 Oil 20ml / 0.67 fl. oz
For intermediate-level retinol users looking for a highly concentrated, youth booster.
• The Hyaluronic Acid 3 Serum 20ml / 0.67 fl. oz
Highly concentrated 3% hyaluronic acid serum that hydrates, plumps, soothes and supports the skin's moisture barrier
[/Skin Firming/]
The Retinol 0.1 Cream 20ml / 0.67 fl. oz
An irritation-reduced solution created with the optimal ratio of key ingredients for first-time retinol users just starting to notice the appearance of fine lines caused by dry skin.
• The Hyaluronic Acid 3 Serum 20ml / 0.67 fl. oz
Highly concentrated 3% hyaluronic acid serum that hydrates, plumps, soothes and supports the skin's moisture barrier
Check out the product detail pages :
• The Hyaluronic Acid 3 Serum →
• The Niacinamide 15 Serum →
• The Vitamin C 23 Serum →
• The Retinol 0.5 Oil →
• The Retinol 0.1 Cream →
Overall rating: 4.730769 / 5 from 130 reviews.
AI Generated Review Summary
Customers find the 24-HR Synergy Duo effective for skin hydration and smoothness, with a great combination of ingredients. The product is praised for its quality and the hyaluronic acid's effectiveness, leaving skin looking healthier and more plump.
Summary topics
- Product Consistency: 3%
- Skin Feel: 14%
- Skin Hydration: 31%
- Product Quality: 4%
- Skin Appearance: 8%
Review topics: ["absorbs","ingredients","results","scent","quality","improvement","feels","service","texture","consistency","glow","price","packaging","amount","skin","lines","looks","face","shipping","use","buy","difference","works","effect","duo","acid","serum","retinol","combo","change"].
Review highlights
- "I really liked the feel of this serum, it has a thick texture that feels luxurious and makes my face feel really smooth." —
- "Like all of their serums, the dropper is great, the packaging is beautiful and the quality is perfect." —
- "I go with no make-up all of the time now because my skin looks so good, I don't feel I need to cover it." —
Reviews
only because the advertising is
"only because the advertising is very misleading. Having all those different products featured but it really only includes 2. I would not have gotten this if that was the case, I needed different stuff ahead of the acid and 'mide."
A little goes a long way. . . .
"I love how a little goes a long way. I apply the daytime and nighttime as the end of my face-beauty routine. As you can see, I have a very large variety of COSRX products. I love them all."
Amazing kit
"Amazing kit"
these have me looking glossy!
"these have me looking glossy! only just got started but I see promise in them and will get more in the future"
This is the first time
"This is the first time I've used skincare that I can actually see a dramatic difference in my skin. My skin texture and problem areas have noticeably improved."
Really nice product that doesn’t
"Really nice product that doesn’t hurt. Very good ingredients with nice results through the week especially when it’s cold outside my skin isn’t drying."
Excellent products. They're fragrance free
"Excellent products. They're fragrance free and leave my skin feeling incredible. My skin is glowing."
Great duo action
"It is such a great combo. Effects are almost immediate. You’d see result after the first use. I love the duo action. And it is plenty. The bottle have enough amount for a month supply"
good!
"good!"
