Compare · Serums
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


Timeless
20% Vitamin C + E Ferulic Acid Serum
See alternatives$0.84/ml · 30 ml
At a glance
| The 6 Peptide Skin Booster Serum | 20% Vitamin C + E Ferulic Acid Serum |
|---|---|
| $0.12/ml | $0.84/ml |
| 93 · 87 verdicts | 85 · 201 verdicts |
| Niacinamide, Peptides | Vitamin 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
- Water
- Sodium Hyaluronate
Only in The 6 Peptide Skin Booster Serum · 42
- Dipropylene Glycol
- Glycerin
- Pentylene Glycol
- 1,2-Hexanediol
- Niacinamide
- Acetyl Hexapeptide-8
- Copper Tripeptide-1
- Sh-Polypeptide-121
- Dipeptide Diaminobutyroyl Benzylamide Diacetate
- Oligopeptide-68
- Palmitoyl Tripeptide-8
- Allantoin
- Acetyl Glucosamine
- Serine
- Alanine
- Glycine
- Threonine
- Arginine
- Proline
- Betaine
- Sodium PCA
- Sodium Lactate
- PCA
- Glutamic Acid
- Lysine HCL
- Tocopherol
- Dextran
- Glycine Soja (Soybean) Oil
- Hydrogenated Lecithin
- Ammonium Acryloyldimethyltaurate/VP Copolymer
- Polyacrylate Crosspolymer-6
- Butylene Glycol
- Xanthan Gum
- Ethylhexylglycerin
- Adenosine
- Polyquaternium-51
- Disodium EDTA
- Citric Acid
- Caprylyl Glycol
- T-Butyl Alcohol
- Potassium Sorbate
- Sodium Oleate
Only in 20% Vitamin C + E Ferulic Acid Serum · 9
- Ethoxydiglycol
- L-Ascorbic Acid
- Propylene Glycol
- Alpha Tocopherol
- Polysorbate 80
- Panthenol
- Ferulic Acid
- Benzylalcohol
- Dehydroacetic Acid