Perfect Pair: Retinol Booster Anti-Oxidant Gel

Pennoyer MD Skin Science

Where to buy Possibly in stock

About this product

The Pennoyer MD Skin Science Perfect Pair: Retinol Booster Anti-Oxidant Gel is a serums, essence, ampoule. Our analysis of its 8 ingredients (5 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
8
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 2/0
Good for dry skin
C12-13 Alkyl Lactate Cyclopentasiloxane
Oily/Acne-Prone Skin No data
Sensitive Skin 1/0
Good for sensitive skin
Tetrahexyldecyl Ascorbate

Ingredients list

8 total
Lower hazard (1) Higher hazard (3)
All8 Skin Conditioning9 Antioxidant3 Emollient2 Film Forming2 Fragrance2 Viscosity Controlling1 Hair Conditioning1 Solvent1
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Ethyl Trisiloxane
(Skin Conditioning, Viscosity Controlling)
3
A
Cyclopentasiloxane
(Hair Conditioning, Skin Conditioning, Emollient, Solvent)
Silicone
Silicone
1
Polysilicone-11
(Film Forming)
1
Tetrahexyldecyl Ascorbate
(Antioxidant, Skin Conditioning)
1
C12-13 Alkyl Lactate
(Skin Conditioning, Emollient)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
Feruloyl Soy Glycerides
(Antioxidant, Emulsion Stabilising)
Bisabolol
(Fragrance, Skin Conditioning, Soothing)

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

Ethyl Trisiloxane
Skin Conditioning
Cyclopentasiloxane
Skin Conditioning, Emollient
Tetrahexyldecyl Ascorbate
Antioxidant, Skin Conditioning
C12-13 Alkyl Lactate
Skin Conditioning, Emollient
TOCOPHEROL
Antioxidant, Skin Conditioning
Feruloyl Soy Glycerides
Antioxidant

Benefits

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

Concerns

Contains silicone

Ingredients explained

Ethyl Trisiloxane
Skin conditioning, Viscosity controlling
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningViscosity controlling
Polysilicone-11
Film forming
Low-hazard ingredient.Read moreShow less
EWG 1 Film forming
Tetrahexyldecyl Ascorbate
Antioxidant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 AntioxidantSkin conditioning
C12-13 Alkyl Lactate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningEmollient
TOCOPHEROL
Antioxidant, Fragrance
Limited public safety data.Read moreShow less
EWG N/A AntioxidantFragranceSkin conditioning
Feruloyl Soy Glycerides
Antioxidant, Emulsion stabilising
Limited public safety data.Read moreShow less
EWG N/A AntioxidantEmulsion stabilising
Bisabolol
Fragrance, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A FragranceSkin conditioningSoothing
Cyclopentasiloxane
Hair conditioning, Skin conditioning
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A Hair conditioningSkin conditioningEmollientSolvent Silicone

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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