K-Secret SEOUL 1988 Cream: Retinal Liposome 1% + Fermented Rice — Efficacy 4.3/5.0, Safety 4.5/5.0 | DemythSkin
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[ DemythSkin Verdict ]
K-Secret SEOUL 1988 Cream: Retinal Liposome 1% + Fermented Rice

K-Secret SEOUL 1988 Cream: Retinal Liposome 1% + Fermented Rice

MoisturizerAnti-Aging
Efficacy
Strong
4.3 / 5.0
Safety
Safe
4.5 / 5.0
System Verdict
This is a seriously high-performance, barrier-friendly retinal night cream that punches well above its price, but the retinal is closer to a mid-strong treatment than a true clinical-strength dose. Efficacy is high because you get encapsulated retinal at ~0.01% (100 ppm) plus niacinamide, bakuchiol, a vitamin C derivative and multiple peptides in a well-built emollient base, but the retinal level sits below the ~0.05–0.1% range used in the strongest over-the-counter retinal studies, and the brightening/cofactor actives (ethyl ascorbic acid, peptides) are likely in the sub‑1% zone near the end of the list, so they act as nice support rather than headline drivers.
Active Ingredients Detected
S Tier: Gold StandardsHigh Clinical Proof | Skin-Transformative
Retinal3-0-Ethyl Ascorbic Acid
A Tier: Good BasicsProven Results
WaterGlycerinNiacinamideCaprylic/Capric TriglycerideLactobacillus/Panax Ginseng Root Ferment FiltrateLactobacillus/Rice FermentLactobacillus/Soybean Ferment ExtractMacadamia Ternifolia Seed OilSaccharomyces/Coix Lacryma-Jobi Ma-yuen Seed Ferment FiltrateSaccharomyces/Potato Extract Ferment FiltrateHydrogenated LecithinAllantoinAdenosineCholesterolTocopherol
B Tier: Supporting IngredientsPromising Ingredients
Cetyl EthylhexanoateButylene Glycol1,2-HexanediolPropanediolAmmonium Acryloyldimethyltaurate/VP CopolymerCarbomerTromethamineSodium Acrylate/Sodium Acryloyldimethyl Taurate CopolymerPolyisobuteneXanthan GumDisodium EDTACaprylyl GlycolGlyceryl Acrylate/Acrylic Acid CopolymerCaprylyl/Capryl GlucosidePolyglyceryl-10 OleateSorbitan OleateBrassica Campestris (Rapeseed) SterolsPhytosteryl/Behenyl/Octyldodecyl Lauroyl GlutamateSilicaAluminum/Magnesium Hydroxide StearatePotassium Cetyl PhosphatePentaerythrityl Tetra-di-t-butyl HydroxyhydrocinnamateBakuchiolsh-Oligopeptide-2sh-Polypeptide-1
C Tier: Marketing IdolsHype | Limited or Weak Data
Arctium Lappa Root ExtractCnidium Officinale Root ExtractDioscorea Japonica Root ExtractPaeonia Suffruticosa Root ExtractRehmannia Chinensis Root Extractsh-Oligopeptide-1
D Tier: Potential IrritantsBe Cautious
Ethylhexylglycerin
Analyze on DemythSkin

DemythSkin is an independent ingredient analyzer. Scores are computed by a deterministic rubric from published clinical evidence — no brand pays for a score.