Luminescence Brightening Vitamin C + Peptides Serum

Tahnyc

Luminescence Brightening Vitamin C + Peptides Serum

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About this product

The Tahnyc Luminescence Brightening Vitamin C + Peptides Serum is a serums, essence, ampoule. Our analysis of its 10 ingredients (7 low-risk) rates it Excellent (100/100). Based on its ingredients, it looks well-suited to dry and sensitive skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
10
Low-risk
7
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 2/0
Good for dry skin
Caprylyl Glycol Sodium Hyaluronate
Oily/Acne-Prone Skin No data
Sensitive Skin 2/0
Good for sensitive skin
Hydroxyacetophenone Tetrapeptide-30

Ingredients list

10 total
Lower hazard (1) Higher hazard (1)
All10 Skin Conditioning7 Solvent3 Humectant2 Viscosity Decreasing Agent1 Viscosity Controlling1 Skin Protecting1 Antioxidant1 Hair Conditioning1
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
3-O-ETHYL ASCORBIC ACID
(Skin Conditioning)
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
Tetrapeptide-30
(Skin Conditioning, Skin Protecting)
Acetyl Tetrapeptide-40
(Skin Conditioning)
1
A
1,2-Hexanediol
(Solvent)
1
Hydroxyacetophenone
(Antioxidant)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
1
A
Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant)
1
Tetrasodium Glutamate Diacetate
(Chelating Agent)

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

3-O-ETHYL ASCORBIC ACID
Skin Conditioning
Tetrapeptide-30
Skin Conditioning, Skin Protecting
Acetyl Tetrapeptide-40
Skin Conditioning
Hydroxyacetophenone
Antioxidant
Sodium Hyaluronate
Skin Conditioning, Humectant
Caprylyl Glycol
Skin Conditioning, Emollient

Benefits

Fungal-acne (Malassezia) safe
Good for dry skin
Good for sensitive skin

Concerns

No major concerns flagged

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
3-O-ETHYL ASCORBIC ACID
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
Tetrapeptide-30
Skin conditioning, Skin protecting
Limited public safety data.Read moreShow less
EWG N/A Skin conditioningSkin protecting
Acetyl Tetrapeptide-40
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
1,2-Hexanediol
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Solvent
Hydroxyacetophenone
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 Antioxidant
Caprylyl Glycol
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningEmollientHumectant
Tetrasodium Glutamate Diacetate
Chelating agent
Low-hazard ingredient.Read moreShow less
EWG 1 Chelating agent
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin

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.

3-O-ETHYL ASCORBIC ACID

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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