Cosrx SC40TR04 Serum Review
Our verdict
Cosrx offers this fragrance-free, unscented rejuvenating serum for $20.99 per 100 ml, making it one of the stronger value propositions in this review set. A 4.3 rating from over 1,700 buyers provides meaningful insight into real-world results.
Check price on AmazonBest for
All skin tones and skin types looking for a fragrance-free, natural-aligned serum targeting hydration and the appearance of wrinkles, at an accessible price for a 100 ml bottle.
Skip if
You want a product with disclosed key ingredients so you know exactly what actives you are applying. The spec data lists no key ingredients for this product. Also skip if you are looking specifically for a brightening formula.
- Form Drop
- Skin type All
- Benefits Rejuvenating
- Targets Hydrating,Wrinkles
- Size 100 Milliliters
- Scent Unscented
Our scorecard
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Owner rating4.3/5
4.3 average across 1,700 owner ratings
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Popularity4.1/5
1,700 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other anti-aging skincare: serums, night creams, facial peels, wrinkle patches and anti-aging devices we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
Cosrx is one of the better-known Korean skincare brands in the Western market, with a reputation for straightforward, ingredient-forward formulas. This serum focuses on rejuvenating and hydrating the skin, with wrinkle appearance as an additional target. It ships in a drop format at 100 ml, which at $20.99 represents a reasonable cost per milliliter compared to many 1 fl oz competitors.
Pros
- Fragrance-free and unscented, reducing irritation risk for sensitive skin
- 100 ml size at $20.99 offers strong value compared to smaller serums at similar prices
- Over 1,700 reviews provide a solid data set for gauging buyer experience
- Suitable for all skin tones according to specs
- Natural ingredient positioning aligns with clean-beauty preferences
Cons
- No key ingredients disclosed in spec data, limiting active ingredient transparency
- 4.3 average is decent but below the 4.5 or higher ratings of top-ranked competitors
- Benefit set is limited to rejuvenating and hydration with no brightening claim
- Very low current purchase frequency given the large review count suggests waning momentum
Specifications
- Form
- Drop
- Skin type
- All
- Benefits
- Rejuvenating
- Targets
- Hydrating,Wrinkles
- Size
- 100 Milliliters
- Scent
- Unscented
- Free of
- Fragrance-Free
- Skin tone
- All
- Features
- Natural
Performance notes
Without a disclosed active ingredient list, performance predictions are limited to what the benefit claims suggest: hydration and an improvement in the appearance of wrinkles. These are consistent with humectant-driven formulas (like hyaluronic acid-based serums) that plump the skin surface through water retention. The fragrance-free formulation is particularly relevant for anti-aging routines, since fragrance can be a cumulative irritant that undermines skin-barrier health over time. The drop format allows precise dosing.
What buyers say
With 1,700 reviews at a 4.3 average, Cosrx has a well-tested track record here. The slightly lower rating compared to the best performers in this category may reflect variation in results across different skin types or expectations about wrinkle-specific outcomes. Buyers who know Cosrx from other products like the snail mucin serum tend to approach this brand with established trust.
More from Cosrx
Similar anti-aging skincare: serums, night creams, facial peels, wrinkle patches and anti-aging devices to consider
Frequently asked questions
How does Cosrx's serum compare to its more popular snail mucin products?
This serum is a separate product from the snail mucin line. It targets hydration and the look of wrinkles with a rejuvenating positioning, while the snail mucin products lean more toward skin repair and texture. Both are fragrance-free, which is a consistent trait across Cosrx formulas. The ingredient overlap or differences would need to be confirmed on the product label.
Is this serum good for targeting wrinkles specifically?
Wrinkle appearance is listed as one of the target concerns for this serum. However, without knowing the specific actives, the degree of wrinkle-focused activity is hard to gauge. A hydrating formula can reduce the look of fine lines by plumping the surface of the skin, but dedicated anti-aging actives like retinol or peptides work through different mechanisms. This serum is better framed as a supporting hydration step rather than a sole wrinkle treatment.
Does fragrance-free mean this serum is completely odorless?
Fragrance-free and unscented both describe this product, which means no added fragrance ingredients are included. However, some products listed as fragrance-free may still have a faint natural scent from other ingredients. The fragrance-free classification is the meaningful one for people avoiding synthetic fragrance as a potential irritant.