C-Firma Fresh Vitamin-C Day Serum vs COSRX 5 PDRN Collagen Intense Vitalizing Serum
13%Match
Only 13% overlap — quite different formulas
Ingredient Breakdown
Only in C-Firma Fresh (25)
Ascorbic Acid (Vitamin C)
C: 0/5I: 2/5antioxidant
camellia-sinensis-leaf-extract
caprylhydroxamic-acid
chondrus-crispus-extract
dimethyl-isosorbide
dipotassium-glycyrrhizate
Ferulic Acid
C: 0/5I: 1/5antioxidant
gluconolactone
glutamylamidoethyl-imidazole
glycyrrhiza-glabra-root-extract
lactobacillus-pumpkin-ferment-extract
lactobacillus-punica-granatum-fruit-ferment-extract
laureth-23
leuconostoc-radish-root-ferment-filtrate
oryza-sativa-bran-extract
Phenoxyethanol
C: 0/5I: 2/5preservative
phyllanthus-emblica-fruit-extract
sclerocarya-birrea-seed-oil
Sodium Benzoate
C: 0/5I: 1/5preservative
sorbic-acid
tetrahydrobisdemethoxydiferuloylmethane
tetrahydrodemethoxydiferuloylmethane
tetrahydrodiferuloylmethane
vitis-vinifera-juice-extract
Water (Aqua)
C: 0/5I: 0/5other
Shared (8)
caprylyl-glycol
Ethylhexylglycerin
C: 0/5I: 1/5preservative
Glycerin
C: 0/5I: 0/5humectant
Pentylene Glycol
C: 0/5I: 1/5humectant
Propanediol
C: 0/5I: 0/5humectant
Sodium Hyaluronate
C: 0/5I: 0/5humectant
sodium-hyaluronate-crosspolymer
Tocopherol (Vitamin E)
C: 2/5I: 1/5antioxidant
Only in COSRX 5 (30)
1-2-hexanediol
acetyl-hexapeptide-8
adenosine
Allantoin
C: 0/5I: 0/5humectant
Alpha Arbutin
C: 0/5I: 1/5brightener
ammonium-acryloyldimethyltaurate-vp-copolymer
Aqua/Water/Eau
C: 0/5I: 0/5other
Betaine
C: 0/5I: 0/5humectant
Butylene Glycol
C: 1/5I: 1/5humectant
centella-asiatica-extract
dipropylene-glycol
Disodium EDTA
C: 0/5I: 0/5other
Hyaluronic Acid
C: 0/5I: 0/5humectant
hydrolyzed-collagen
hydrolyzed-corn-starch
hydrolyzed-dna
hydrolyzed-hyaluronic-acid
hydrolyzed-sodium-hyaluronate
hydroxypropyltrimonium-hyaluronate
lactobacillus-ferment
Niacinamide
C: 0/5I: 1/5antioxidant
Panthenol (Vitamin B5)
C: 0/5I: 0/5humectant
polyacrylate-crosspolymer-6
potassium-hyaluronate
sodium-acetylated-hyaluronate
sodium-dna
sodium-phytate
sucrose
t-butyl-alcohol
Xanthan Gum
C: 0/5I: 0/5other
When Used Together
SynergyGlycerin + Hyaluronic Acid
Hyaluronic acid and glycerin together provide multi-weight hydration for plump, supple skin.
SynergyHyaluronic Acid + Niacinamide
Niacinamide enhances hyaluronic acid hydration. Excellent combo for all skin types.
SynergyFerulic Acid + Niacinamide
[Class rule] Antioxidants work synergistically — combining multiple provides broader protection.