Retinal Renew Retinaldehyde Gel

Prequel

Where to buy Possibly in stock

About this product

The Prequel Retinal Renew Retinaldehyde Gel is a serums, essence, ampoule. Our analysis of its 34 ingredients (26 low-risk) rates it Excellent (97/100). 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
34
Low-risk
26
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

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 10/6
Good for dry skin
Glyceryl Stearate Glyceryl Stearate Citrate Cetyl Alcohol Stearyl Alcohol Ectoin Caprylic/Capric Triglyceride Caprylyl Glycol Glycerin Coco-Caprylate/Caprate Dimethicone
Caution for dry skin
Boron Nitride Cetyl Alcohol Stearyl Alcohol Xanthan Gum Glycerin Sodium Hydroxide
Oily/Acne-Prone Skin No data
Sensitive Skin 2/7
Good for sensitive skin
Glycerin Dimethicone
Caution for sensitive skin
Dipropylene Glycol Cetyl Alcohol Stearyl Alcohol Caprylic/Capric Triglyceride Glycerin Citric Acid Phenoxyethanol

Ingredients list

34 total
Lower hazard (1) Higher hazard (6)
All34 Skin Conditioning23 Emulsion Stabilising11 Emollient9 Fragrance8 Viscosity Controlling8 Viscosity Increasing Agent7 Solvent6 Masking5
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
2
A
Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent)
Good for Dry Skin
Good for Dry Skin
Fungal Acne
Fungal Acne Trigger
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
3
A
Dimethicone
(Antifoaming Agent, Skin Protecting, Emollient, Skin Conditioning)
Silicone
Silicone
SIMMONDSIA CHINENSIS SEED OIL
(Hair Conditioning, Skin Conditioning, Skin Conditioning Emollient)
1
Hydroxyapatite
(Abrasive, Bulking Agent, Oral Care Agent, Emulsion Stabilising)
5
6
Retinal
(Skin Conditioning)
1
Ectoin
(Buffering Agent, Skin Conditioning, Emollient)
1
B
Centella Asiatica Leaf Extract
(Skin Conditioning)
1
Cyanocobalamin
(Skin Conditioning)
Oryza Sativa Bran Extract
(Skin Conditioning, Skin Protecting)
Helianthus Annuus Extract
(Hair Conditioning, Skin Conditioning, Skin Conditioning Emollient)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
1
A
Boron Nitride
(Slip Modifier, Absorbent, Opacifying, Skin Conditioning)
1
B
Coco-Caprylate/Caprate
(Emollient, Skin Conditioning)
1
A
Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, Solvent)
1
A
Cetyl Alcohol
(Emulsion Stabilising, Fragrance, Opacifying, Emulsifying, Surfactant, Foam Boosting, Viscosity Increasing Agent, Emollient, Masking, Viscosity Controlling)
1
A
Stearyl Alcohol
(Emulsion Stabilising, Fragrance, Emulsifying, Surfactant, Foambooster, Viscosity Increasing Agent, Emollient, Foam Boosting, Masking, Opacifying, Refatting, Viscosity Controlling)
1
A
Glyceryl Stearate
(Emollient, Emulsifying)
Fungal Acne
Fungal Acne Trigger
1
B
Glyceryl Stearate Citrate
(Skin Conditioning, Emollient, Emulsifying)
Fungal Acne
Fungal Acne Trigger
1
C9-12 Alkane
(Solvent)
1
Castor Oil/IPDI Copolymer
(Film Forming)
1
Ammonium Acryloyldimethyltaurate/VP Copolymer
(Viscosity Controlling)
Dilinoleic Acid/Butanediol Copolymer
(Film Forming, Plasticizer)
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
rosmarinus officinalis leaf extract
(Antimicrobial, Fragrance, Skin Conditioning)
1
A
Sclerotium Gum
(Emulsion Stabilising, Skin Conditioning, Viscosity Increasing Agent, Viscosity Controlling)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
1
A
Dipropylene Glycol
(Fragrance, Solvent, Viscosity Decreasing Agent, Masking, Viscosity Controlling)
1
A
Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant)
1
Sodium Phytate
(Chelating Agent, Oral Care Agent)
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin

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

Glycerin
Humectant, Skin Protecting
Dimethicone
Skin Protecting, Emollient
SIMMONDSIA CHINENSIS SEED OIL
Skin Conditioning
Retinal
Skin Conditioning
Ectoin
Skin Conditioning, Emollient
Centella Asiatica Leaf Extract
Skin Conditioning

Benefits

Good for dry skin

Concerns

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

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
SIMMONDSIA CHINENSIS SEED OIL
Hair conditioning, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Hair conditioningSkin conditioningSkin conditioning emollient
Hydroxyapatite
Abrasive, Bulking agent
Low-hazard ingredient.Read moreShow less
EWG 1 AbrasiveBulking agentOral care agentEmulsion stabilising
Ectoin
Buffering agent, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Buffering agentSkin conditioningEmollient
Centella Asiatica Leaf Extract
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Skin conditioning
Cyanocobalamin
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
Helianthus Annuus Extract
Hair conditioning, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Hair conditioningSkin conditioningSkin conditioning emollient
TOCOPHEROL
Antioxidant, Fragrance
Limited public safety data.Read moreShow less
EWG N/A AntioxidantFragranceSkin conditioning
Boron Nitride
Slip modifier, Absorbent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Slip modifierAbsorbentOpacifyingSkin conditioning
Coco-Caprylate/Caprate
Emollient, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B EmollientSkin conditioning
Caprylic/Capric Triglyceride
Emollient, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientMaskingPerfumingSkin conditioningSolvent
Cetyl Alcohol
Emulsion stabilising, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingFragranceOpacifyingEmulsifyingSurfactantFoam boostingViscosity increasing agentEmollientMaskingViscosity controlling
Stearyl Alcohol
Emulsion stabilising, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingFragranceEmulsifyingSurfactant- foamboosterViscosity increasing agentEmollientFoam boostingMaskingOpacifyingRefattingViscosity controlling
+ 12 more — see the full ingredients list above
Glycerin
Denaturant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A DenaturantFragranceHair conditioningHumectantOral care agentOral health care drugSkin protectingViscosity decreasing agentPerfumingSolvent Good for Dry SkinFungal-acne trigger
Dimethicone
Antifoaming agent, Skin protecting
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A Antifoaming agentSkin protectingEmollientSkin conditioning Silicone
Retinal
Skin conditioning
Moderate-hazard ingredient.Read moreShow less
EWG 5–6 Skin conditioning
Glyceryl Stearate
Emollient, Emulsifying
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientEmulsifying Fungal-acne trigger
Glyceryl Stearate Citrate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Skin conditioningEmollientEmulsifying Fungal-acne trigger
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Citric Acid
Chelating agent, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 2 CIR A Chelating agentFragrancePh adjusterBuffering agentMasking Bad for Sensitive Skin

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Evening: Use at night — start 2–3× a week and build up as your skin tolerates it.
  • 3 Wear SPF the next day: Acids and retinoids increase sun sensitivity — daily sunscreen is a must while using this.

General guidance from this product's category and active ingredients — always follow the directions on the package.

Trust & honesty

Pregnancy & breastfeeding

Contains ingredients some choose to avoid or double-check while pregnant or nursing.

Often avoided
Retinoids (Vitamin A) (Retinal)

Topical retinoids (retinol, retinaldehyde, retinyl esters) are widely advised against in pregnancy as a precaution. The strongest evidence is for ORAL retinoids; topical absorption is low, but most clinicians err on the side of caution.

This is general information, not medical advice. Pregnancy guidance varies and depends on concentration and your individual situation — always check with your doctor, midwife or pharmacist. How we flag this.

Effective levels — general guide

The concentrations these actives are typically effective at in research — not a measurement of this product.

Retinoids (Vitamin A) 0.01–1%

Most studied between 0.1% and 1%. Higher is not automatically better — irritation climbs with dose, so a well-formulated lower strength is often the sweet spot.

Retinal

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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