Vitamin C Capsule Serum

Common Heir

Where to buy Possibly in stock

About this product

The Common Heir Vitamin C Capsule Serum is a serums, essence, ampoule. Our analysis of its 15 ingredients (9 low-risk) rates it Excellent (100/100). 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
15
Low-risk
9
Fragrance
Fragrance-free
Origin
United States
Data updated
Jun 2026

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 5/1
Good for dry skin
Neopentyl Glycol Diheptanoate Isoamyl Laurate Caprylic/Capric Triglyceride Coco-Caprylate/Caprate Polyglyceryl-3 Diisostearate
Caution for dry skin
Polyglyceryl-3 Diisostearate
Oily/Acne-Prone Skin No data
Sensitive Skin 1/2
Good for sensitive skin
Tetrahexyldecyl Ascorbate
Caution for sensitive skin
Isoamyl Laurate Caprylic/Capric Triglyceride

Ingredients list

15 total
Lower hazard (1) Higher hazard (1)
All15 Skin Conditioning16 Emollient5 Perfuming3 Fragrance2 Antioxidant2 Solvent2 Emulsifying2 Skin Conditioning Emollient2
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
B
Isoamyl Laurate
(Fragrance, Skin Conditioning, Emollient)
1
B
Coco-Caprylate/Caprate
(Emollient, Skin Conditioning)
1
Tetrahexyldecyl Ascorbate
(Antioxidant, Skin Conditioning)
1
A
Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, Solvent)
1
Castor Oil/IPDI Copolymer
(Film Forming)
1
Neopentyl Glycol Diheptanoate
(Skin Conditioning, Emollient, Viscosity Increasing Agent)
1
C13-15 Alkane
(Solvent)
Polyglyceryl-6 Oleate
(Emulsifying)
BRASSICA CAMPESTRIS SEED OIL
(Skin Conditioning)
glycyrrhiza glabra root extract
(Bleaching, Perfuming, Skin Conditioning, Skin Conditioning Emollient, Smoothing, Soothing)
1
B
Polyglyceryl-3 Diisostearate
(Skin Conditioning, Emollient, Emulsifying, Surfactant)
Bad for Oily Skin
Bad for Oily Skin
Fungal Acne
Fungal Acne Trigger
1
Althaea Officinalis Root Extract
(Skin Conditioning)
Oryza Sativa Bran Extract
(Skin Conditioning, Skin Protecting)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
Glycine Soja Oil
(Perfuming, Skin Conditioning, Skin Conditioning Emollient)

My Ingredient Notes

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

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No close formula match yet — browse other products like this

Key ingredients

Antioxidants
Shields skin from free radical damage.
Vitamin C
Brightens, evens tone, and supports collagen.
Vitamin E
Protects skin and soothes irritation.

Benefits

HydratingBoosts hydration and relieves dry, tight skin.
BrighteningRestores radiance to dull, tired skin.
Redness ReducingSoothes visible redness and calms irritation.
Dark SpotsFades dark spots for even skin tone.
Barrier RepairStrengthen and restore your skin's natural barrier.
Reduces IrritationEases discomfort and supports skin resilience.
Scar HealingImproves the look of marks and scars.
Anti-AgingSoftens lines and helps skin look youthful.

Concerns

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

Ingredients explained

Isoamyl Laurate
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B FragranceSkin conditioningEmollient
Coco-Caprylate/Caprate
Emollient, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B EmollientSkin conditioning
Tetrahexyldecyl Ascorbate
Antioxidant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 AntioxidantSkin conditioning
Caprylic/Capric Triglyceride
Emollient, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientMaskingPerfumingSkin conditioningSolvent
Castor Oil/IPDI Copolymer
Film forming
Low-hazard ingredient.Read moreShow less
EWG 1 Film forming
Neopentyl Glycol Diheptanoate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningEmollientViscosity increasing agent
C13-15 Alkane
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Polyglyceryl-6 Oleate
Emulsifying
Limited public safety data.Read moreShow less
EWG N/A Emulsifying
BRASSICA CAMPESTRIS SEED OIL
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
glycyrrhiza glabra root extract
Bleaching, Perfuming
Limited public safety data.Read moreShow less
EWG N/A BleachingPerfumingSkin conditioningSkin conditioning emollientSmoothingSoothing
Althaea Officinalis Root Extract
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Oryza Sativa Bran Extract
Skin conditioning, Skin protecting
Limited public safety data.Read moreShow less
EWG N/A Skin conditioningSkin protecting
TOCOPHEROL
Antioxidant, Fragrance
Limited public safety data.Read moreShow less
EWG N/A AntioxidantFragranceSkin conditioning
Glycine Soja Oil
Perfuming, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A PerfumingSkin conditioningSkin conditioning emollient
Polyglyceryl-3 Diisostearate
Skin conditioning, Emollient
Potentially comedogenic - can block poresRead moreShow less
EWG 1 CIR B Skin conditioningEmollientEmulsifyingSurfactant Bad for Oily SkinFungal-acne trigger

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.

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