Medik8 Crystal Retinal 3 Night Serum — Efficacy 4.3/5.0, Safety 3.9/5.0 | DemythSkin
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[ DemythSkin Verdict ]
Medik8 Crystal Retinal 3 Night Serum
Medik8

Medik8 Crystal Retinal 3 Night Serum

SerumAnti-Aging
Efficacy
Strong
4.3 / 5.0
Safety
Mostly Safe
3.9 / 5.0
System Verdict
Clinically lean, cleverly formulated retinal serum with strong anti-aging potential but noticeable fragrance baggage. Efficacy is driven by 0.03% encapsulated retinaldehyde (a high-evidence vitamin A active that works faster than standard retinol) supported by humectants and multiple vitamin C and E antioxidants, all in a well-structured emulsion that helps stability and tolerability; however, the lack of barrier lipids and the use of fragrant plant extracts and coumarin prevent this from being a perfect, universally gentle formula.
Active Ingredients Detected
S Tier: Gold StandardsHigh Clinical Proof | Skin-Transformative
RetinalClimbazole
A Tier: Good BasicsProven Results
GlycerinTocopheryl AcetateSqualaneSodium HyaluronateTetrahexyldecyl Ascorbate3-O-Ethyl Ascorbic Acid
B Tier: Supporting IngredientsPromising Ingredients
Sodium Acrylate/Sodium Acryloyldimethyl Taurate CopolymerPPG-12/SMDI CopolymerCyclodextrinHydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate CopolymerAluminaSodium PolyaspartateHydroxyacetophenoneSorbitan IsostearateDecylene GlycolBHT
C Tier: Marketing IdolsHype | Limited or Weak Data
Eclipta Prostrata ExtractMelia Azadirachta Leaf ExtractLonicera Japonica (Honeysuckle) Flower ExtractLonicera Caprifolium (Honeysuckle) Flower ExtractDipteryx Odorata (Tonka) Bean ExtractVanilla Planifolia (Vanilla) Fruit Extract
D Tier: Potential IrritantsBe Cautious
Rubus Chamaemorus (Cloudberry) Seed OilMoringa Oleifera Seed OilDaucus Carota Sativa (Carrot) Seed OilCoumarin
What Each Ingredient Does
Aqua (Water)
solvent
Caprylic/Capric Triglyceride
emollient
Glycerin
humectant
Isododecane
light emollient
Cetearyl Olivate
emulsifier
Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
gel-forming thickener
Cetearyl Alcohol
fatty alcohol emollient
PPG-12/SMDI Copolymer
film-forming polymer
Sorbitan Olivate
emulsifier
Tocopheryl Acetate
antioxidant vitamin E
Titanium Dioxide
Pigment / opacifier in this formula — not acting as a UV filter.
Eclipta Prostrata Extract
botanical extract
Cyclodextrin
encapsulation carrier
Squalane
emollient
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
gel-forming thickener
Phenoxyethanol
preservative
Melia Azadirachta Leaf Extract
botanical extract
Hydroxypropyl Methylcellulose
viscosity modifier
Sodium Hyaluronate
humectant (hyaluronic acid)
Tetrahexyldecyl Ascorbate
lipid-soluble vitamin C derivative
Rubus Chamaemorus (Cloudberry) Seed Oil
emollient plant oil
Alumina
opacifier / pigment aid
Isostearic Acid
emulsifier / surfactant
Lecithin
emulsifier
Full Ingredient List (INCI)

Aqua (Water), Caprylic/Capric Triglyceride, Glycerin, Isododecane, Cetearyl Olivate, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Cetearyl Alcohol, PPG-12/SMDI Copolymer, Sorbitan Olivate, Tocopheryl Acetate, Titanium Dioxide, Eclipta Prostrata Extract, Cyclodextrin, Squalane, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Phenoxyethanol, Melia Azadirachta Leaf Extract, Hydroxypropyl Methylcellulose, Sodium Hyaluronate, Tetrahexyldecyl Ascorbate, Rubus Chamaemorus (Cloudberry) Seed Oil, Alumina, Isostearic Acid, Lecithin, Polyglyceryl-3 Polyricinoleate, Polyhydroxystearic Acid, Stearic Acid, Pentylene Glycol, Retinal, Moringa Oleifera Seed Oil, Sodium Polyaspartate, Climbazole, Disodium EDTA, Lonicera Japonica (Honeysuckle) Flower Extract, Lonicera Caprifolium (Honeysuckle) Flower Extract, Daucus Carota Sativa (Carrot) Seed Oil, Ethylhexylglycerin, 3-O-Ethyl Ascorbic Acid, Dipteryx Odorata (Tonka) Bean Extract, Hydroxyacetophenone, Polysorbate 60, Sorbitan Isostearate, Vanilla Planifolia (Vanilla) Fruit Extract, Decylene Glycol, 1,2-Hexanediol, BHT, Coumarin.

Frequently Asked

Is Medik8 Crystal Retinal 3 Night Serum worth it?

Medik8 Crystal Retinal 3 Night Serum scores 4.3 out of 5.0 for efficacy (Strong) and 3.9 out of 5.0 for safety (Mostly Safe) on DemythSkin's independent ingredient analysis. Clinically lean, cleverly formulated retinal serum with strong anti-aging potential but noticeable fragrance baggage. Efficacy is driven by 0.03% encapsulated retinaldehyde (a high-evidence vitamin A active that works fa

What are the key active ingredients in Medik8 Crystal Retinal 3 Night Serum?

Medik8 Crystal Retinal 3 Night Serum contains these gold-standard actives with strong clinical evidence: Retinal, Climbazole.

Does Medik8 Crystal Retinal 3 Night Serum contain fragrance or known irritants?

DemythSkin flags these ingredients in Medik8 Crystal Retinal 3 Night Serum as potential irritants: Rubus Chamaemorus (Cloudberry) Seed Oil, Moringa Oleifera Seed Oil, Daucus Carota Sativa (Carrot) Seed Oil, Coumarin.

How is Medik8 Crystal Retinal 3 Night Serum scored?

DemythSkin grades every product on two independent axes: efficacy (whether the ingredients have clinical evidence of working) and safety (irritation and sensitisation risk). Ingredients are classified S through D against a database of over 3,000 compounds. No brand pays for a score.

Analyze on DemythSkin

Analysis last updated: 2026-07-31. DemythSkin is an independent ingredient analyzer. Scores are computed by a deterministic rubric from published clinical evidence — no brand pays for a score.