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The 6 Peptide Skin Booster Serum vs 20% Vitamin C + E Ferulic Acid Serum: which is better?

This comparison comes down to easy hydration and layering versus brightening dark spots and dullness, with more irritation complaints.

Reddit’s pick

The 6 Peptide Skin Booster Serum

  • Rated higher: The 6 Peptide Skin Booster Serum — 93 vs 85 nextscore

COSRX 6 Peptide Booster earns a strongly positive reception for hydration, plumping on damp skin, and easy layering; though some report subtle results or irritation, its watery, makeup-friendly feel stands out.

Choose The 6 Peptide Skin Booster Serum if

  • you want lightweight hydration and makeup-friendly prep for oily skin
  • you prefer a watery layer that sits under other products

Choose 20% Vitamin C + E Ferulic Acid Serum if

  • you want to target dark spots or dullness with a brightening serum
  • your skin tolerates products that can cause burning or redness

At a glance

The 6 Peptide Skin Booster Serum20% Vitamin C + E Ferulic Acid Serum
$0.12/ml$0.84/ml
93 · 87 verdicts85 · 201 verdicts
Niacinamide, PeptidesVitamin C, Ferulic Acid

What Reddit says

The 6 Peptide Skin Booster Serum

What Reddit likes

  • Watery toner-like texture; layers under everything
  • Hydrates and plumps best on damp skin
  • Makeup-friendly prep for oily skin

Watch out for

  • Peptide results can be imperceptible after a full bottle
  • Jawline breakouts reported by acne-prone users
  • Niacinamide-triggered flushing and blotchiness

20% Vitamin C + E Ferulic Acid Serum

What Reddit likes

  • 20% L-ascorbic acid for visible brightening
  • Near-dupe formula at roughly $20–30
  • Watery, non-sticky texture under sunscreen

Watch out for

  • Burning and redness hit sensitive or tret-irritated skin
  • Breakouts and clogged pores are recurring complaints
  • Hot-dog-water smell bothers many users
Compare full ingredient lists · 2 in common

In both · 2

  1. Water
  2. Sodium Hyaluronate

Only in The 6 Peptide Skin Booster Serum · 42

  1. Dipropylene Glycol
  2. Glycerin
  3. Pentylene Glycol
  4. 1,2-Hexanediol
  5. Niacinamide
  6. Acetyl Hexapeptide-8
  7. Copper Tripeptide-1
  8. Sh-Polypeptide-121
  9. Dipeptide Diaminobutyroyl Benzylamide Diacetate
  10. Oligopeptide-68
  11. Palmitoyl Tripeptide-8
  12. Allantoin
  13. Acetyl Glucosamine
  14. Serine
  15. Alanine
  16. Glycine
  17. Threonine
  18. Arginine
  19. Proline
  20. Betaine
  21. Sodium PCA
  22. Sodium Lactate
  23. PCA
  24. Glutamic Acid
  25. Lysine HCL
  26. Tocopherol
  27. Dextran
  28. Glycine Soja (Soybean) Oil
  29. Hydrogenated Lecithin
  30. Ammonium Acryloyldimethyltaurate/VP Copolymer
  31. Polyacrylate Crosspolymer-6
  32. Butylene Glycol
  33. Xanthan Gum
  34. Ethylhexylglycerin
  35. Adenosine
  36. Polyquaternium-51
  37. Disodium EDTA
  38. Citric Acid
  39. Caprylyl Glycol
  40. T-Butyl Alcohol
  41. Potassium Sorbate
  42. Sodium Oleate

Only in 20% Vitamin C + E Ferulic Acid Serum · 9

  1. Ethoxydiglycol
  2. L-Ascorbic Acid
  3. Propylene Glycol
  4. Alpha Tocopherol
  5. Polysorbate 80
  6. Panthenol
  7. Ferulic Acid
  8. Benzylalcohol
  9. Dehydroacetic Acid

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