iS Clinical C-15 Serum Advance +

iS Clinical

Where to buy Possibly in stock

About this product

The iS Clinical C-15 Serum Advance + is a serums, essence, ampoule. Our analysis of its 7 ingredients (5 low-risk) rates it Excellent (87/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
7
Low-risk
5
Fragrance
Fragrance-free
Origin
United States

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 2/1
Good for dry skin
Sodium Hyaluronate Propylene Glycol
Caution for dry skin
Zinc Sulfate
Oily/Acne-Prone Skin 2/0
Good for oily/acne-prone skin
Ascorbic Acid (Vitamin C) Zinc Sulfate
Sensitive Skin 2/3
Good for sensitive skin
Bioflavonoids Ascorbic Acid (Vitamin C)
Caution for sensitive skin
Propylene Glycol Ascorbic Acid (Vitamin C) Phenoxyethanol

Ingredients list

7 total
Lower hazard (1) Higher hazard (4)
All7 Skin Conditioning7 Humectant3 Fragrance3 Solvent2 Preservative1 Soothing1 Antiplaque1 Antimicrobial1
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
1
A
Ascorbic Acid (Vitamin C)
(Antioxidant, Fragrance, Ph Adjuster, Skin Conditioning, Buffering Agent, Masking)
Good for Dry Skin
Good for Dry Skin
3
B
Propylene Glycol
(Fragrance, Humectant, Skin Conditioningagent Miscellaneous, Solvent, Viscosity Decreasing Agent, Skin Conditioning, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
4
Zinc Sulfate
(Cosmetic Astringent, Cosmetic Biocide, Oral Care Agent, Antimicrobial, Antiplaque)
1
Bioflavonoids
(Skin Conditioning, Soothing)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben

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

Sodium Hyaluronate
Skin Conditioning, Humectant
Ascorbic Acid (Vitamin C)
Antioxidant, Skin Conditioning
Propylene Glycol
Humectant, Skin Conditioning
Bioflavonoids
Skin Conditioning, Soothing

Benefits

Fungal-acne (Malassezia) safe
Good for dry skin
Good for oily/acne-prone skin

Concerns

Contains paraben
May not suit sensitive skin

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Zinc Sulfate
Cosmetic astringent, Cosmetic biocide
Low-to-moderate hazard.Read moreShow less
EWG 4 Cosmetic astringentCosmetic biocideOral care agentAntimicrobialAntiplaque
Bioflavonoids
Skin conditioning, Soothing
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningSoothing
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
Ascorbic Acid (Vitamin C)
Antioxidant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AntioxidantFragrancePh adjusterSkin conditioningBuffering agentMasking Good for Dry Skin
Propylene Glycol
Fragrance, Humectant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B FragranceHumectantSkin-conditioningagent - miscellaneousSolventViscosity decreasing agentSkin conditioningViscosity controlling Good for Dry Skin
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben

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.

Ascorbic Acid (Vitamin C)

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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