A² Advanced Retinal Serum .2%

TRUology

Where to buy Possibly in stock

About this product

The TRUology A² Advanced Retinal Serum .2% is a serums, essence, ampoule. Our analysis of its 36 ingredients (26 low-risk) rates it Excellent (96/100). 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
36
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 8/6
Good for dry skin
Cetearyl Alcohol Cetyl Alcohol Squalane Sodium Hyaluronate Glycerin Camellia Sinensis Leaf Extract Lactic Acid Coco-Caprylate
Caution for dry skin
Cyclodextrin Cetyl Alcohol Glycerin Camellia Sinensis Leaf Extract Ceteareth-20 Polysorbate 20
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Camellia Sinensis Leaf Extract
Sensitive Skin 5/6
Good for sensitive skin
Resveratrol Caprooyl Tetrapeptide-3 Glycerin Tetrahexyldecyl Ascorbate Camellia Sinensis Leaf Extract
Caution for sensitive skin
Cetyl Alcohol Glycerin Arnica Montana Flower Extract Camellia Sinensis Leaf Extract Lactic Acid Phenoxyethanol

Ingredients list

36 total
Lower hazard (1) Higher hazard (6)
All36 Skin Conditioning29 Emulsion Stabilising8 Viscosity Controlling6 Skin Protecting6 Fragrance5 Humectant5 Viscosity Increasing Agent5 Emollient5
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
A
Pentylene Glycol
(Skin Conditioning, Solvent)
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
1
A
Cyclodextrin
(Absorbent, Chelating Agent)
3
B
Polysorbate 20
(Emulsifying, Surfactant)
Fungal Acne
Fungal Acne Trigger
1
A
Squalane
(Emollient, Hair Conditioning, Refatting, Skin Conditioning)
B
Coco-Caprylate
(Emollient)
1
A
Cetearyl Alcohol
(Emulsion Stabilising, Opacifying, Foam Boosting, Viscosity Increasingagent Aqueous, Viscosity Increasing Agent, Emollient, Emulsifying, Viscosity Controlling)
1
A
Cetyl Alcohol
(Emulsion Stabilising, Fragrance, Opacifying, Emulsifying, Surfactant, Foam Boosting, Viscosity Increasing Agent, Emollient, Masking, Viscosity Controlling)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
1
Palmitoyl Tripeptide-5
(Skin Conditioning)
1
Caprooyl Tetrapeptide-3
(Skin Protecting)
1
A
Hydroxyethylcellulose
(Binding Agent, Emulsion Stabilising, Film Forming, Viscosity Increasing Agent, Binding, Stabilising, Viscosity Controlling)
3
B
Ceteareth-20
(Cleansing, Emulsifying, Surfactant)
1
A
Beta-Glucan
(Bulking Agent, Skin Conditioning)
1
Resveratrol
(Antioxidant, Skin Protecting)
1
Dimethyl Sulfone
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
5
6
Retinal
(Skin Conditioning)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
1
Tetrahexyldecyl Ascorbate
(Antioxidant, Skin Conditioning)
1
A
Dextran
(Binding Agent, Bulking Agent, Binding, Viscosity Controlling)
1
Dipalmitoyl Hydroxyproline
(Skin Conditioning, Antistatic Agent, Hair Conditioning)
4
B
Lactic Acid
(Exfoliant, Fragrance, Humectant, Ph Adjuster, Skin Conditioning Agent Humectant, Skin Conditioning, Buffering Agent)
Bad for Sensitive Skin
Bad for Sensitive Skin
2
Arnica Montana Flower Extract
(Masking, Perfuming, Skin Conditioning)
glycyrrhiza glabra root extract
(Bleaching, Perfuming, Skin Conditioning, Skin Conditioning Emollient, Smoothing, Soothing)
1
B
Camellia Sinensis Leaf Extract
(Antimicrobial, Antioxidant, Astringent, Emollient, Humectant, Masking, Oral Care Agent, Skin Conditioning, Skin Protecting, Tonic, Uv Absorber)
Good for Oily Skin
Good for Oily Skin
Salix Nigra Bark Extract
(Skin Protecting)
Epilobium Angustifolium Flower/Leaf/Stem Extract
(Skin Conditioning)
Lonicera Japonica Flower Extract
(Skin Conditioning)
Lonicera Caprifolium Flower Extract
(Perfuming, Skin Conditioning)
1
A
Rubus Chamaemorus Seed Oil
(Skin Conditioning)
1
A
Sclerotium Gum
(Emulsion Stabilising, Skin Conditioning, Viscosity Increasing Agent, Viscosity Controlling)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
1
3
Titanium Dioxide
(Cosmetic Colorant, Opacifying, Sunscreen Agent, Uv Absorber)
Good for Sensitive Skin
Good 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
Pentylene Glycol
Skin Conditioning
Niacinamide
Skin Conditioning
Squalane
Emollient, Skin Conditioning
Coco-Caprylate
Emollient
Cetearyl Alcohol
Emollient

Benefits

Good for dry skin
Good for oily/acne-prone 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
Pentylene Glycol
Skin conditioning, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSolvent
Niacinamide
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningSmoothing
Cyclodextrin
Absorbent, Chelating agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AbsorbentChelating agent
Squalane
Emollient, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientHair conditioningRefattingSkin conditioning
Coco-Caprylate
Emollient
Limited public safety data.Read moreShow less
EWG N/A CIR B Emollient
Cetearyl Alcohol
Emulsion stabilising, Opacifying
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingOpacifyingFoam boostingViscosity increasingagent - aqueousViscosity increasing agentEmollientEmulsifyingViscosity controlling
Cetyl Alcohol
Emulsion stabilising, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingFragranceOpacifyingEmulsifyingSurfactantFoam boostingViscosity increasing agentEmollientMaskingViscosity controlling
Palmitoyl Tripeptide-5
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Caprooyl Tetrapeptide-3
Skin protecting
Low-hazard ingredient.Read moreShow less
EWG 1 Skin protecting
Hydroxyethylcellulose
Binding agent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentEmulsion stabilisingFilm formingViscosity increasing agentBindingStabilisingViscosity controlling
Ceteareth-20
Cleansing, Emulsifying
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B CleansingEmulsifyingSurfactant
Beta-Glucan
Bulking agent, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Bulking agentSkin conditioning
Resveratrol
Antioxidant, Skin protecting
Low-hazard ingredient.Read moreShow less
EWG 1 AntioxidantSkin protecting
Dimethyl Sulfone
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
+ 13 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
Polysorbate 20
Emulsifying, Surfactant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B EmulsifyingSurfactant Fungal-acne trigger
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
Retinal
Skin conditioning
Moderate-hazard ingredient.Read moreShow less
EWG 5–6 Skin conditioning
Lactic Acid
Exfoliant, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 4 CIR B ExfoliantFragranceHumectantPh adjusterSkin-conditioning agent -humectantSkin conditioningBuffering agent Bad for Sensitive Skin
Camellia Sinensis Leaf Extract
Antimicrobial, Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B AntimicrobialAntioxidantAstringentEmollientHumectantMaskingOral care agentSkin conditioningSkin protectingTonicUv absorber Good for Oily Skin
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Titanium Dioxide
Cosmetic colorant, Opacifying
Low-to-moderate hazard.Read moreShow less
EWG 1–3 Cosmetic colorantOpacifyingSunscreen agentUv absorber Good for Sensitive Skin

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Morning only: Apply as the last step of your AM routine, after moisturiser, and reapply every ~2 hours of sun exposure.
  • 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

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

Niacinamide 2–5% (up to 10%)

Most research uses 2–5%; some formulas go to 10%. Very high levels can cause flushing in sensitive skin.

Niacinamide

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.

Lactic 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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