C-Tetra Lipid Vitamin C Serum

Medik8

Where to buy Possibly in stock

About this product

The Medik8 C-Tetra Lipid Vitamin C Serum is a serums, essence, ampoule. Our analysis of its 11 ingredients (5 low-risk) rates it Great (74/100). Based on its ingredients, it looks well-suited to dry skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
11
Low-risk
5
Fragrance
Fragrance-free
Origin
United Kingdom

The evidence

Quick Product Notes

Paraben-Free Sulfate-Free Alcohol-Free Silicone-Free EU Allergen-Free Fungal Acne (Malassezia) Safe Minimal Ingredients

Notable Effects & Ingredients

No Notable Effects & Ingredients

Ingredients Related to Skin Types

Good   Bad — tap a skin type to see which ingredients · estimated from ingredient functions
Dry Skin 3/0
Good for dry skin
PPG-12/SMDI Copolymer Cyclohexasiloxane Cyclopentasiloxane
Oily/Acne-Prone Skin No data
Sensitive Skin 2/4
Good for sensitive skin
Tetrahexyldecyl Ascorbate Tocopheryl Acetate
Caution for sensitive skin
Linalool Limonene Citral Geraniol

Ingredients list

11 total
Lower hazard (1) Higher hazard (7)
All11 Skin Conditioning11 Fragrance4 Hair Conditioning3 Emollient3 Solvent3 Masking3 Antioxidant2 Perfuming2
EWG CIR Ingredient Name & Cosmetic Functions Notes
SIMMONDSIA CHINENSIS SEED OIL
(Hair Conditioning, Skin Conditioning, Skin Conditioning Emollient)
3
A
Cyclopentasiloxane
(Hair Conditioning, Skin Conditioning, Emollient, Solvent)
Silicone
Silicone
2
A
Cyclohexasiloxane
(Hair Conditioning, Skin Conditioning, Emollient, Solvent)
1
Tetrahexyldecyl Ascorbate
(Antioxidant, Skin Conditioning)
citrus grandis peel oil
(Fragrance, Perfuming, Skin Conditioning)
3
Tocopheryl Acetate
(Antioxidant, Skin Conditioning)
Bad for Oily Skin
Bad for Oily Skin
1
PPG-12/SMDI Copolymer
(Emollient, Film Forming, Hair Fixing, Skin Conditioning)
6
Limonene
(Deodorant, Perfuming, Solvent)
Allergens
Allergens
7
Citral
(Flavoring Agent, Fragrance, Masking)
Allergens
Allergens
5
Linalool
(Fragrance, Deodorant, Masking)
Allergens
Allergens
7
Geraniol
(Fragrance, Masking, Tonic)
Allergens
Allergens

My Ingredient Notes

No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.

Browse similar serums, essence, ampoule
No close formula match yet — browse other products like this

Key ingredients

SIMMONDSIA CHINENSIS SEED OIL
Skin Conditioning
Cyclopentasiloxane
Skin Conditioning, Emollient
Cyclohexasiloxane
Skin Conditioning, Emollient
Tetrahexyldecyl Ascorbate
Antioxidant, Skin Conditioning
citrus grandis peel oil
Skin Conditioning
Tocopheryl Acetate
Antioxidant, Skin Conditioning

Benefits

Fungal-acne (Malassezia) safe
Good for dry skin

Concerns

Contains silicone
Contains eu allergen
Citral — higher EWG
Geraniol — higher EWG
May not suit sensitive skin

EWG flags hazard, not real-world risk — ratings don't account for how much of an ingredient a product contains. Treat these as things to research, not verdicts. How we score →

Ingredients explained

SIMMONDSIA CHINENSIS SEED OIL
Hair conditioning, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Hair conditioningSkin conditioningSkin conditioning emollient
Cyclohexasiloxane
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A Hair conditioningSkin conditioningEmollientSolvent
Tetrahexyldecyl Ascorbate
Antioxidant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 AntioxidantSkin conditioning
citrus grandis peel oil
Fragrance, Perfuming
Limited public safety data.Read moreShow less
EWG N/A FragrancePerfumingSkin conditioning
PPG-12/SMDI Copolymer
Emollient, Film forming
Low-hazard ingredient.Read moreShow less
EWG 1 EmollientFilm formingHair fixingSkin conditioning
Cyclopentasiloxane
Hair conditioning, Skin conditioning
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A Hair conditioningSkin conditioningEmollientSolvent Silicone
Tocopheryl Acetate
Antioxidant, Skin conditioning
Potentially comedogenic - can block poresRead moreShow less
EWG 3 AntioxidantSkin conditioning Bad for Oily Skin
Limonene
Deodorant, Perfuming
Moderate-hazard ingredient.Read moreShow less
EWG 6 DeodorantPerfumingSolvent Allergens
Citral
Flavoring agent, Fragrance
Higher-hazard ingredient.Read moreShow less
EWG 7 Flavoring agentFragranceMasking Allergens
Linalool
Fragrance, Deodorant
Moderate-hazard ingredient.Read moreShow less
EWG 5 FragranceDeodorantMasking Allergens
Geraniol
Fragrance, Masking
Higher-hazard ingredient.Read moreShow less
EWG 7 FragranceMaskingTonic Allergens

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Morning works well: Antioxidants like vitamin C pair well with daytime use under sunscreen.

General guidance from this product's category and active ingredients — always follow the directions on the package.

Trust & honesty

Effective levels — general guide

The concentrations these actives are typically effective at in research — not a measurement of this product.

Vitamin C (ascorbic) 5–20%

L-ascorbic acid is usually used at 5–20% (around 10–15% is common). Above ~20% adds little and tends to irritate more; it also needs a low pH to work.

Tetrahexyldecyl Ascorbate

INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.

From the community

0
Reviews
0
Saved by users
0
In collections

Ratings & reviews

Write a Review
0.0
from 0 ratings

Used this product? Rate it in 10 seconds

Alternatives