Compare · Serums
Caffeine Solution 5% + EGCG vs The 6 Peptide Skin Booster Serum: which is better?
The choice turns on whether you want quick, temporary under-eye depuffing or lightweight hydration and smoother layering.
Reddit’s pick
The 6 Peptide Skin Booster Serum
- Rated higher: The 6 Peptide Skin Booster Serum — 94 vs 71 nextscore
COSRX The 6 Peptide Skin Booster Serum earns far more praise than complaints for lightweight hydration and easy layering; even when results stay subtle, its watery texture makes a smooth makeup-prep step.
Choose Caffeine Solution 5% + EGCG if
- you want quick morning depuffing for tired under-eyes
- your main concern is under-eye bags
Choose The 6 Peptide Skin Booster Serum if
- you want lightweight hydration without a heavy finish
- you want a watery prep step that layers under makeup


At a glance
| Caffeine Solution 5% + EGCG | The 6 Peptide Skin Booster Serum |
|---|---|
| $0.41/ml | $0.10/ml |
| 71 · 92 verdicts | 94 · 94 verdicts |
| Caffeine | Niacinamide, Peptides |
What Reddit says
Caffeine Solution 5% + EGCG
What Reddit likes
- Quick, temporary depuffing for morning eye bags
- Very thin serum that absorbs quickly
- Can make tired under-eyes look brighter
Watch out for
- Barely changes genetic or pigment-based dark circles
- Sticky texture can make concealer cake
- Can trigger dryness, irritation, or redder-looking under-eyes
The 6 Peptide Skin Booster Serum
What Reddit likes
- Watery toner-serum texture; layers under everything
- Excellent skin-prep step for smoother layering and makeup
- Lightweight hydration without a heavy finish
Watch out for
- Results can stop at mild hydration and a little glow
- Breakouts reported around the jawline
- Can trigger redness, flushing, or blotchiness
Compare full ingredient lists · 8 in common
In both · 8
- Aqua/Water/Eau
- Glycerin
- Polyacrylate Crosspolymer-6
- Xanthan Gum
- Pentylene Glycol
- 1,2-Hexanediol
- Ethylhexylglycerin
- Caprylyl Glycol
Only in Caffeine Solution 5% + EGCG · 18
- Caffeine
- Maltodextrin
- Propanediol
- Epigallocatechin Gallatyl Glucoside
- Gallyl Glucoside
- Hyaluronic Acid
- Oxidized Glutathione
- Melanin
- Glycine Soja (Soybean) Seed Extract
- Hydroxyethylcellulose
- Propyl Gallate
- Trisodium Ethylenediamine Disuccinate
- Dimethyl Isosorbide
- Lactic Acid
- Salicylic Acid
- Dehydroacetic Acid
- Benzyl Alcohol
- Phenoxyethanol
Only in The 6 Peptide Skin Booster Serum · 36
- Dipropylene Glycol
- Niacinamide
- Acetyl Hexapeptide-8
- Copper Tripeptide-1
- Sh-Polypeptide-121
- Dipeptide Diaminobutyroyl Benzylamide Diacetate
- Oligopeptide-68
- Palmitoyl Tripeptide-8
- Allantoin
- Sodium Hyaluronate
- 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
- Butylene Glycol
- Adenosine
- Polyquaternium-51
- Disodium EDTA
- Citric Acid
- T-Butyl Alcohol
- Potassium Sorbate
- Sodium Oleate