Dupes for Advanced The Vitamin C 23 Serum
by COSRX · Serum
15 products come close enough to call a dupe, best match first.
How the match is scored
A dupe is always the same kind of product — a serum is only compared with serums. Within that, two things are scored and blended.
Ingredient Match compares the two ingredient lists. Lists are ordered by concentration, so an ingredient near the top counts for more than one near the bottom; a dupe has to cover what matters most in the original. It weighs most of all.
Attribute Match compares what the two products are for: the benefits their ingredients are known for, such as hydrating or acne fighting. Those benefits come from the ingredients, not from tests of either product.
Only products scoring 60% or more are listed, at most 50. A match is about the formula on the label: it can't see concentrations the label doesn't print, texture, or how a product feels on your skin.
Dupe #1
They share 20 of this product's 30 ingredients (the dupe lists 25).
Both are
- Fragrance-free
- EU-allergen-free
- Alcohol-free
- Paraben-free
- Sulfate-free
- Reef-safe
- Vegan
Both are likely good for
- Hydrating
- Barrier Repair
- Reduces Irritation
- Redness Reducing
- Anti-Aging
- Firming
- Smoothing
- Brightening
- Dark Spots
- Even Tone
- Acne Fighting
- Oil Control
- Pore Refining
- Antioxidant
- Sun Protection
- Anti-Pollution
- Under-Eye Care
Brand price: USD 21.00 · checked 25 Sept 2026 · on the brand's site
Compare side by side →Dupe #2
They share 12 of this product's 30 ingredients (the dupe lists 35).
Both are
- Fragrance-free
- EU-allergen-free
- Alcohol-free
- Paraben-free
- Sulfate-free
- Reef-safe
Compare side by side →Both are likely good for
- Hydrating
- Barrier Repair
- Reduces Irritation
- Redness Reducing
- Anti-Aging
- Firming
- Smoothing
- Brightening
- Dark Spots
- Even Tone
- Acne Fighting
- Oil Control
- Pore Refining
- Antioxidant
- Anti-Pollution
- Under-Eye Care
Dupe #3
They share 12 of this product's 30 ingredients (the dupe lists 38).
Both are
- Fragrance-free
- EU-allergen-free
- Alcohol-free
- Paraben-free
- Sulfate-free
- Reef-safe
Both are likely good for
- Hydrating
- Barrier Repair
- Reduces Irritation
- Redness Reducing
- Anti-Aging
- Firming
- Smoothing
- Brightening
- Dark Spots
- Even Tone
- Acne Fighting
- Oil Control
- Pore Refining
- Antioxidant
- Anti-Pollution
Brand price: USD 24.00 · checked 26 Sept 2026 · on the brand's site
Compare side by side →Dupe #4
Goodal
Green Tangerine Vita C Niacinamide 10 Toning Ampoule64% match
97% Attribute Match · 41% Ingredient Match
They share 13 of this product's 30 ingredients (the dupe lists 44).
Both are
- Fragrance-free
- EU-allergen-free
- Alcohol-free
- Paraben-free
- Sulfate-free
- Reef-safe
Compare side by side →Both are likely good for
- Hydrating
- Barrier Repair
- Reduces Irritation
- Redness Reducing
- Anti-Aging
- Firming
- Smoothing
- Brightening
- Dark Spots
- Even Tone
- Acne Fighting
- Oil Control
- Pore Refining
- Antioxidant
- Anti-Pollution
- Under-Eye Care
Dupe #5
They share 12 of this product's 30 ingredients (the dupe lists 29).
Both are
- Fragrance-free
- EU-allergen-free
- Alcohol-free
- Paraben-free
- Sulfate-free
- Reef-safe
Both are likely good for
- Hydrating
- Barrier Repair
- Reduces Irritation
- Redness Reducing
- Anti-Aging
- Firming
- Smoothing
- Brightening
- Dark Spots
- Even Tone
- Acne Fighting
- Oil Control
- Pore Refining
- Antioxidant
- Anti-Pollution
Brand price: USD 14.90 · checked 26 Sept 2026 · on the brand's site
Compare side by side →Dupe #6
innisfree
Green Tea Enzyme Vitamin C Brightening Serum63% match
84% Attribute Match · 43% Ingredient Match
They share 14 of this product's 30 ingredients (the dupe lists 36).
Both are
- Fragrance-free
- EU-allergen-free
- Alcohol-free
- Paraben-free
- Sulfate-free
- Reef-safe
Both are likely good for
- Hydrating
- Barrier Repair
- Reduces Irritation
- Redness Reducing
- Smoothing
- Brightening
- Dark Spots
- Even Tone
- Acne Fighting
- Oil Control
- Pore Refining
- Antioxidant
- Anti-Pollution
Brand price: USD 32.00 · checked 8 Oct 2026 · on the brand's site
Compare side by side →Dupe #7
They share 11 of this product's 30 ingredients (the dupe lists 42).
Both are
- Fragrance-free
- EU-allergen-free
- Alcohol-free
- Paraben-free
- Sulfate-free
- Reef-safe
Both are likely good for
- Hydrating
- Barrier Repair
- Reduces Irritation
- Redness Reducing
- Anti-Aging
- Firming
- Smoothing
- Brightening
- Dark Spots
- Even Tone
- Acne Fighting
- Oil Control
- Pore Refining
- Antioxidant
- Anti-Pollution
Brand price: USD 22.00 · checked 26 Sept 2026 · on the brand's site
Compare side by side →Dupe #8
COSRX
The Alpha-Arbutin 2 Discoloration Care Serum62% match
84% Attribute Match · 41% Ingredient Match
They share 14 of this product's 30 ingredients (the dupe lists 38).
Both are
- Fragrance-free
- EU-allergen-free
- Paraben-free
- Sulfate-free
- Reef-safe
Both are likely good for
- Hydrating
- Barrier Repair
- Reduces Irritation
- Redness Reducing
- Smoothing
- Brightening
- Dark Spots
- Even Tone
- Acne Fighting
- Oil Control
- Pore Refining
- Antioxidant
- Anti-Pollution
Brand price: USD 25.00 · checked 25 Sept 2026 · on the brand's site
Compare side by side →Dupe #9
They share 8 of this product's 30 ingredients (the dupe lists 16).
Both are
- Fragrance-free
- EU-allergen-free
- Alcohol-free
- Paraben-free
- Sulfate-free
- Reef-safe
- Vegan
Compare side by side →Both are likely good for
- Hydrating
- Barrier Repair
- Redness Reducing
- Anti-Aging
- Firming
- Smoothing
- Brightening
- Dark Spots
- Even Tone
- Acne Fighting
- Oil Control
- Pore Refining
- Antioxidant
- Anti-Pollution
Dupe #10
Numbuzin
No.5+ Glutathione Vitamin Concentrated Serum61% match
94% Attribute Match · 35% Ingredient Match
They share 11 of this product's 30 ingredients (the dupe lists 47).
Both are
- Fragrance-free
- EU-allergen-free
- Alcohol-free
- Paraben-free
- Sulfate-free
- Reef-safe
Both are likely good for
- Hydrating
- Barrier Repair
- Reduces Irritation
- Redness Reducing
- Anti-Aging
- Firming
- Smoothing
- Brightening
- Dark Spots
- Even Tone
- Acne Fighting
- Oil Control
- Pore Refining
- Antioxidant
- Anti-Pollution
Brand price: USD 26.00 · checked 26 Sept 2026 · on the brand's site
Compare side by side →Dupe #11
They share 11 of this product's 30 ingredients (the dupe lists 51).
Both are
- Alcohol-free
- Paraben-free
- Sulfate-free
- Reef-safe
Both are likely good for
- Hydrating
- Barrier Repair
- Reduces Irritation
- Redness Reducing
- Anti-Aging
- Firming
- Smoothing
- Brightening
- Dark Spots
- Even Tone
- Acne Fighting
- Oil Control
- Pore Refining
- Antioxidant
- Anti-Pollution
Brand price: USD 22.46 · checked 26 Sept 2026 · on the brand's site
Compare side by side →Dupe #12
They share 13 of this product's 30 ingredients (the dupe lists 49).
Both are
- Fragrance-free
- EU-allergen-free
- Alcohol-free
- Paraben-free
- Sulfate-free
- Reef-safe
- Vegan
Both are likely good for
- Hydrating
- Barrier Repair
- Reduces Irritation
- Redness Reducing
- Anti-Aging
- Firming
- Smoothing
- Brightening
- Dark Spots
- Even Tone
- Acne Fighting
- Oil Control
- Pore Refining
- Antioxidant
- Sun Protection
- Anti-Pollution
Brand price: USD 37.00 · checked 8 Oct 2026 · on the brand's site
Compare side by side →Dupe #13
Medicube
Kojic Acid Turmeric Vitamin Gold Jelly Mist Serum60% match
94% Attribute Match · 35% Ingredient Match
They share 10 of this product's 30 ingredients (the dupe lists 43).
Both are
- Alcohol-free
- Paraben-free
- Sulfate-free
- Reef-safe
Both are likely good for
- Hydrating
- Barrier Repair
- Reduces Irritation
- Redness Reducing
- Anti-Aging
- Firming
- Smoothing
- Brightening
- Dark Spots
- Even Tone
- Acne Fighting
- Oil Control
- Pore Refining
- Antioxidant
- Anti-Pollution
Brand price: USD 22.00 · checked 26 Sept 2026 · on the brand's site
Compare side by side →Dupe #14
Goodal
Green Tangerine Vita C 15 Dark Spot Care Ampoule60% match
94% Attribute Match · 35% Ingredient Match
They share 12 of this product's 30 ingredients (the dupe lists 54).
Both are
- Alcohol-free
- Paraben-free
- Sulfate-free
- Reef-safe
Compare side by side →Both are likely good for
- Hydrating
- Barrier Repair
- Reduces Irritation
- Redness Reducing
- Anti-Aging
- Firming
- Smoothing
- Brightening
- Dark Spots
- Even Tone
- Acne Fighting
- Oil Control
- Pore Refining
- Antioxidant
- Anti-Pollution
- Under-Eye Care
Dupe #15
They share 10 of this product's 30 ingredients (the dupe lists 34).
Both are
- Fragrance-free
- EU-allergen-free
- Alcohol-free
- Paraben-free
- Sulfate-free
- Reef-safe
Compare side by side →Both are likely good for
- Hydrating
- Barrier Repair
- Reduces Irritation
- Redness Reducing
- Anti-Aging
- Smoothing
- Brightening
- Dark Spots
- Even Tone
- Acne Fighting
- Oil Control
- Pore Refining
- Antioxidant
- Anti-Pollution