Youth Intelligence Age Defying Serum

Zelens

Where to buy Possibly in stock

About this product

The Zelens Youth Intelligence Age Defying Serum is a serums, essence, ampoule. Our analysis of its 54 ingredients (49 low-risk) rates it Excellent (99/100). 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
54
Low-risk
49
Fragrance
Fragrance-free
Origin
United Kingdom

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 13/5
Good for dry skin
Glycogen Lauryl Lactate Mannitol Cetearyl Alcohol Squalane Caprylic/Capric Triglyceride Butylene Glycol Glycerin Pentaerythrityl Tetraethylhexanoate Hydrolyzed Glycosaminoglycans Hyaluronic Acid Dimethicone Hydrolyzed Soy Protein
Caution for dry skin
Cetearyl Glucoside Sodium Stearoyl Glutamate Xanthan Gum Glycerin Sodium Hydroxide
Oily/Acne-Prone Skin 1/1
Good for oily/acne-prone skin
Magnesium Ascorbyl Phosphate
Caution for oily/acne-prone skin
Pentaerythrityl Tetraethylhexanoate
Sensitive Skin 8/12
Good for sensitive skin
Ulva Lactuca Extract Palmaria Palmata Extract Magnesium Ascorbyl Phosphate Glycerin Fucus Serratus Extract Laminaria Digitata Extract Himanthalia Elongata Extract Dimethicone
Caution for sensitive skin
p-Anisic Acid Lauryl Lactate Levulinic Acid Mannitol Caprylic/Capric Triglyceride Butylene Glycol Glycerin Citric Acid Sodium Benzoate Sorbic Acid Potassium Sorbate Benzyl Alcohol

Ingredients list

54 total
Lower hazard (1) Higher hazard (5)
All54 Skin Conditioning43 Fragrance11 Humectant9 Skin Protecting8 Viscosity Controlling8 Hair Conditioning8 Masking7 Solvent7
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
A
Pentaerythrityl Tetraethylhexanoate
(Binding Agent, Skin Conditioning Agent Occlusive, Viscosity Increasing Agent, Emollient, Viscosity Controlling)
1
Phytosteryl Canola Glycerides
(Hair Conditioning, Skin Conditioning)
1
A
Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, 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
3
A
Dimethicone
(Antifoaming Agent, Skin Protecting, Emollient, Skin Conditioning)
Silicone
Silicone
1
B
Lauryl Lactate
(Fragrance, Skin Conditioning, Emollient)
1
A
Cetearyl Alcohol
(Emulsion Stabilising, Opacifying, Foam Boosting, Viscosity Increasingagent Aqueous, Viscosity Increasing Agent, Emollient, Emulsifying, Viscosity Controlling)
1
A
Squalane
(Emollient, Hair Conditioning, Refatting, Skin Conditioning)
1
Hydrolyzed Glycosaminoglycans
(Hair Conditioning, Skin Conditioning, Humectant)
1
A
Magnesium Ascorbyl Phosphate
(Antioxidant)
1
A
Phospholipids
(Skin Conditioning)
1
B
Sodium Stearoyl Glutamate
(Hair Conditioning, Skin Conditioning, Surfactant Cleansingagent, Emulsifying)
1
B
Cetearyl Glucoside
(Emulsifying, Surfactant)
5
A
Benzyl Alcohol
(External Analgesic, Fragrance, Oral Health Care Drug, Preservative, Solvent, Viscosity Decreasing Agent, Masking)
Allergens
Allergens
Ornithine
(Skin Conditioning)
1
Trifluoroacetyl Tripeptide-2
(Skin Conditioning)
Teprenone
(Skin Conditioning)
1
Acetyl Tetrapeptide-9
(Skin Conditioning)
1
Yeast Extract
(Skin Conditioning)
1
Glycolipids
(Skin Conditioning)
A
Hydrolyzed Soy Protein
(Antistatic Agent, Hair Conditioning, Humectant, Skin Conditioning)
1
Hydrolyzed Yeast Protein
(Hair Conditioning, Skin Conditioning)
1
Methylsilanol Mannuronate
(Skin Conditioning, Antistatic Agent)
1
A
Hyaluronic Acid
(Skin Conditioning, Viscosity Increasing Agent, Antistatic Agent, Humectant, Moisturising)
1
Plankton Extract
(Skin Conditioning)
1
SpiruLina Maxima Extract
(Smoothing)
1
Fucus Serratus Extract
(Skin Protecting)
1
Sea Whip Extract
(Skin Conditioning)
1
Laminaria Digitata Extract
(Skin Protecting)
1
Palmaria Palmata Extract
(Skin Protecting)
1
Saccharomyces Ferment Lysate Filtrate
(Skin Conditioning)
1
Himanthalia Elongata Extract
(Skin Protecting)
1
Ulva Lactuca Extract
(Skin Conditioning, Skin Protecting)
1
Silanetriol
(Hair Conditioning)
1
Glycogen
(Skin Conditioning, Humectant)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
1
Methylpropanediol
(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
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
Ammonium Acryloyldimethyltaurate/VP Copolymer
(Viscosity Controlling)
1
A
Dehydroacetic Acid
(Preservative)
1
A
Dextran
(Binding Agent, Bulking Agent, Binding, Viscosity Controlling)
1
A
Sodium Dehydroacetate
(Preservative)
1
Mannitol
(Binding Agent, Flavoring Agent, Humectant, Binding, Masking, Moisturising, Skin Conditioning)
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
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
3
A
Sorbic Acid
(Fragrance, Preservative)
3
A
Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking)
1
Levulinic Acid
(Fragrance, Skin Conditioning, Perfuming)
1
p-Anisic Acid
(Flavoring Agent, Fragrance, Masking)
3
A
Potassium Sorbate
(Fragrance, Preservative)

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

Pentaerythrityl Tetraethylhexanoate
Emollient
Phytosteryl Canola Glycerides
Skin Conditioning
Caprylic/Capric Triglyceride
Emollient, Skin Conditioning
Glycerin
Humectant, Skin Protecting
Dimethicone
Skin Protecting, Emollient
Lauryl Lactate
Skin Conditioning, Emollient

Benefits

Good for dry skin

Concerns

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

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Pentaerythrityl Tetraethylhexanoate
Binding agent, Skin-conditioning agent - occlusive
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentSkin-conditioning agent - occlusiveViscosity increasing agentEmollientViscosity controlling
Phytosteryl Canola Glycerides
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Hair conditioningSkin conditioning
Caprylic/Capric Triglyceride
Emollient, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientMaskingPerfumingSkin conditioningSolvent
Lauryl Lactate
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B FragranceSkin conditioningEmollient
Cetearyl Alcohol
Emulsion stabilising, Opacifying
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingOpacifyingFoam boostingViscosity increasingagent - aqueousViscosity increasing agentEmollientEmulsifyingViscosity controlling
Squalane
Emollient, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientHair conditioningRefattingSkin conditioning
Hydrolyzed Glycosaminoglycans
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Hair conditioningSkin conditioningHumectant
Magnesium Ascorbyl Phosphate
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antioxidant
Phospholipids
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioning
Sodium Stearoyl Glutamate
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Hair conditioningSkin conditioningSurfactant - cleansingagentEmulsifying
Cetearyl Glucoside
Emulsifying, Surfactant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B EmulsifyingSurfactant
Ornithine
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Trifluoroacetyl Tripeptide-2
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Teprenone
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
+ 34 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
Benzyl Alcohol
External analgesic, Fragrance
Moderate-hazard ingredient.Read moreShow less
EWG 5 CIR A External analgesicFragranceOral health care drugPreservativeSolventViscosity decreasing agentMasking Allergens
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

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.

Magnesium Ascorbyl Phosphate

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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