California Vitamin C Serum

laikou

Where to buy Possibly in stock

About this product

The laikou California Vitamin C Serum is a serums, essence, ampoule. Our analysis of its 15 ingredients (8 low-risk) rates it Excellent (85/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin. Heads up: it contains fragrance, which can irritate sensitive or reactive skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
15
Low-risk
8
Fragrance
Contains fragrance
Origin
China

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 2/2
Good for dry skin
Butylene Glycol Sodium Hyaluronate
Caution for dry skin
PEG-40 Hydrogenated Castor Oil Triethanolamine
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Sodium Ascorbyl Phosphate
Sensitive Skin 1/5
Good for sensitive skin
Sodium Ascorbyl Phosphate
Caution for sensitive skin
Butylene Glycol PEG-40 Hydrogenated Castor Oil Methylparaben Phenoxyethanol Triethanolamine

Ingredients list

15 total
Lower hazard (1) Higher hazard (6)
All15 Skin Conditioning7 Fragrance6 Emulsion Stabilising3 Preservative3 Solvent2 Humectant2 Masking2 Viscosity Controlling2
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
A
Sodium Ascorbyl Phosphate
(Antioxidant)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
Tremella Fuciformis Polysaccharide
(Emulsion Stabilising, Film Forming, Skin Conditioning)
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
5
B
Triethanolamine
(Fragrance, Ph Adjuster, Emulsifying, Surfactant, Buffering Agent, Masking)
4
A
Methylparaben
(Fragrance, Preservative)
Paraben
Paraben
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
6
A
Imidazolidinyl Urea
(Preservative)
PARFUM
(Fragrance, Perfuming)
3
B
PEG-40 Hydrogenated Castor Oil
(Fragrance, Emulsifying, Surfactant, Perfuming)
Fungal Acne
Fungal Acne Trigger
5
CI 16255
(Cosmetic Colorant)
3
CI 19140
(Colorant, Cosmetic Colorant)

My Ingredient Notes

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

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Key ingredients

Vitamin C
Brightens, evens tone, and supports collagen.
Hyaluronic Acid
Hydrates by attracting and holding water.
Antioxidants
Shields skin from free radical damage.

Benefits

HydratingBoosts hydration and relieves dry, tight skin.
Redness ReducingSoothes visible redness and calms irritation.
Barrier RepairStrengthen and restore your skin's natural barrier.
Anti-AgingSoftens lines and helps skin look youthful.
BrighteningRestores radiance to dull, tired skin.
Reduces Large PoresMinimizes the look of enlarged pores.
Scar HealingImproves the look of marks and scars.
Skin TextureSmooths rough patches and refines texture.

Concerns

Contains paraben
Not fungal acne (malassezia) safe
May not suit sensitive skin

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Sodium Ascorbyl Phosphate
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antioxidant
Tremella Fuciformis Polysaccharide
Emulsion stabilising, Film forming
Limited public safety data.Read moreShow less
EWG N/A Emulsion stabilisingFilm formingSkin conditioning
Carbomer
Emulsion stabilising, Viscosity increasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingViscosity increasing agentGel formingViscosity controlling
Ethylhexylglycerin
Deodorant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A DeodorantSkin conditioning
PARFUM
Fragrance, Perfuming
Limited public safety data.Read moreShow less
EWG N/A FragrancePerfuming
CI 19140
Colorant, Cosmetic colorant
Low-to-moderate hazard.Read moreShow less
EWG 3 ColorantCosmetic colorant
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry Skin
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
Triethanolamine
Fragrance, Ph adjuster
Moderate-hazard ingredient.Read moreShow less
EWG 5 CIR B FragrancePh adjusterEmulsifyingSurfactantBuffering agentMasking
Methylparaben
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Imidazolidinyl Urea
Preservative
Moderate-hazard ingredient.Read moreShow less
EWG 6 CIR A Preservative
PEG-40 Hydrogenated Castor Oil
Fragrance, Emulsifying
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B FragranceEmulsifyingSurfactantPerfuming Fungal-acne trigger
CI 16255
Cosmetic colorant
Moderate-hazard ingredient.Read moreShow less
EWG 5 Cosmetic colorant

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.

Sodium Ascorbyl Phosphate

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.

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Similar formula, but a safer ingredient profile than this product (85/100).