The Golden Rule - Retinoid/Retinol Serum

The Route Beauty

Where to buy Possibly in stock

About this product

The Route Beauty The Golden Rule - Retinoid/Retinol Serum is a serums, essence, ampoule. Our analysis of its 47 ingredients (31 low-risk) rates it Excellent (98/100). 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
47
Low-risk
31
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 10/5
Good for dry skin
Betaine Sodium Acetylated Hyaluronate Sodium Hyaluronate Crosspolymer Squalane Caprylic/Capric Triglyceride Caprylyl Glycol Butylene Glycol Sodium Hyaluronate Glycerin Tremella Fuciformis Sporocarp Extract
Caution for dry skin
Lysolecithin Xanthan Gum Glycerin Sodium Hydroxide Silica
Oily/Acne-Prone Skin No data
Sensitive Skin 4/7
Good for sensitive skin
Ascorbyl Palmitate Glycerin Tremella Fuciformis Sporocarp Extract Orobanche Rapum Extract
Caution for sensitive skin
Ascorbyl Palmitate Caprylic/Capric Triglyceride Butylene Glycol Glycerin Citric Acid Potassium Sorbate Phenoxyethanol

Ingredients list

47 total
Lower hazard (1) Higher hazard (4)
All47 Skin Conditioning30 Viscosity Controlling11 Humectant11 Fragrance8 Solvent7 Hair Conditioning5 Emulsion Stabilising4 Antioxidant4
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
Butyrospermum Parkii Butter
(Skin Conditioning, Viscosity Controlling)
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
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
Dimethyl Isosorbide
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
Hydroxypinacolone Retinoate
(Skin Conditioning)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
Hydrolyzed Sodium Hyaluronate
(Skin Conditioning)
1
Sodium Hyaluronate Crosspolymer
(Humectant, Skin Conditioning)
1
Sodium Acetylated Hyaluronate
(Humectant)
Magnesium Carboxymethyl Beta-Glucan
(Skin Conditioning)
1
Tremella Fuciformis Sporocarp Extract
(Antioxidant, Hair Conditioning, Humectant, Skin Conditioning)
1
Rheum Rhaponticum Root Extract
(Skin Conditioning)
Zingiber Officinale Root Extract
(Fragrance, Perfuming, Skin Conditioning, Tonic)
Solanum Lycopersicum Fruit Extract
(Antioxidant)
Albatrellus Confluens Extract
(Humectant, Skin Conditioning)
Orobanche Rapum Extract
(Skin Protecting)
Hydroxymethoxyphenyl Decanone
(Skin Conditioning)
1
Hydroxyphenyl Propamidobenzoic Acid
(Skin Conditioning)
Bisabolol
(Fragrance, Skin Conditioning, Soothing)
1
A
Squalane
(Emollient, Hair Conditioning, Refatting, Skin Conditioning)
1
B
Betaine
(Hair Conditioning, Humectant, Antistatic Agent, Skin Conditioning, Viscosity Controlling)
1
2
A
Silica
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Viscosity Controlling)
1
A
Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, Solvent)
1
A
Lysolecithin
(Emulsifying, Surfactant)
1
A
Sclerotium Gum
(Emulsion Stabilising, Skin Conditioning, Viscosity Increasing Agent, Viscosity Controlling)
1
A
Ascorbyl Palmitate
(Antioxidant, Masking)
Fungal Acne
Fungal Acne Trigger
4
B
Glycolic Acid
(Exfoliant, Ph Adjuster, Buffering Agent)
Good for Oily Skin
Good for Oily Skin
Bad for Sensitive Skin
Bad for Sensitive Skin
1
A
Pentylene Glycol
(Skin Conditioning, Solvent)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
A
Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant)
1
A
Pullulan
(Binding Agent, Film Forming, Binding)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
3
A
Potassium Sorbate
(Fragrance, Preservative)
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
1
Caprylhydroxamic Acid
(Chelating Agent)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
A
Synthetic Fluorphlogopite
(Bulking Agent, Viscosity Increasing Agent, Viscosity Controlling)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
Chloroacetic Acid
(Keratolytic)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)
2
A
Tin Oxide
(Abrasive, Bulking Agent, Opacifying, Viscosity Controlling)
CI 77891
(Colorant)
1
2
CI 77491
(Colorant, Cosmetic Colorant)
CI 77480
(Colorant)

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

Butyrospermum Parkii Butter
Skin Conditioning
Glycerin
Humectant, Skin Protecting
Hydroxypinacolone Retinoate
Skin Conditioning
Sodium Hyaluronate
Skin Conditioning, Humectant
Hydrolyzed Sodium Hyaluronate
Skin Conditioning
Sodium Hyaluronate Crosspolymer
Humectant, Skin Conditioning

Benefits

Good for dry skin

Concerns

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

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Butyrospermum Parkii Butter
Skin conditioning, Viscosity controlling
Limited public safety data.Read moreShow less
EWG N/A Skin conditioningViscosity controlling
Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
Dimethyl Isosorbide
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
Hydroxypinacolone Retinoate
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Hydrolyzed Sodium Hyaluronate
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Sodium Hyaluronate Crosspolymer
Humectant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 HumectantSkin conditioning
Sodium Acetylated Hyaluronate
Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 Humectant
Magnesium Carboxymethyl Beta-Glucan
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Tremella Fuciformis Sporocarp Extract
Antioxidant, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 AntioxidantHair conditioningHumectantSkin conditioning
Rheum Rhaponticum Root Extract
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Zingiber Officinale Root Extract
Fragrance, Perfuming
Limited public safety data.Read moreShow less
EWG N/A FragrancePerfumingSkin conditioningTonic
Solanum Lycopersicum Fruit Extract
Antioxidant
Limited public safety data.Read moreShow less
EWG N/A Antioxidant
Albatrellus Confluens Extract
Humectant, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A HumectantSkin conditioning
Orobanche Rapum Extract
Skin protecting
Limited public safety data.Read moreShow less
EWG N/A Skin protecting
+ 25 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
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
Ascorbyl Palmitate
Antioxidant, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AntioxidantMasking Fungal-acne trigger
Glycolic Acid
Exfoliant, Ph adjuster
Skin irritation can occur at high concentrationRead moreShow less
EWG 4 CIR B ExfoliantPh adjusterBuffering agent Good for Oily SkinBad for Sensitive Skin
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry Skin
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
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 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) (Hydroxypinacolone Retinoate)

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.

Hydroxypinacolone Retinoate

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.

Ascorbyl Palmitate

AHA (acid exfoliant) 5–10% (OTC)

OTC leave-on AHAs are usually 5–10%. The effect also depends on pH and free-acid value, not the percentage alone.

Glycolic 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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