Alto Defense Serum

SkinBetter Science

Where to buy Possibly in stock

About this product

The SkinBetter Science Alto Defense Serum is a serums, essence, ampoule. Our analysis of its 64 ingredients (45 low-risk) rates it Excellent (99/100). Based on its ingredients, it looks well-suited to oily / acne-prone, 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
64
Low-risk
45
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 15/12
Good for dry skin
Acacia Decurrens Flower Wax Diisostearyl Malate Lauryl Lactate Linolenic Acid Linoleic Acid Methyl Gluceth-20 Cetearyl Alcohol Butylene Glycol Sodium PCA Glycerin Cholesterol Polyglycerin-3 Jojoba Esters Camellia Sinensis Leaf Extract Lecithin
Caution for dry skin
Dicetyl Phosphate Diisostearyl Malate Linolenic Acid Linoleic Acid Sodium Lauroyl Lactylate Xanthan Gum Glycerin Ceteth-20 Phosphate Camellia Sinensis Leaf Extract Sodium Hydroxide Steareth-2 Lecithin
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Camellia Sinensis Leaf Extract
Sensitive Skin 11/9
Good for sensitive skin
Acacia Decurrens Flower Wax Superoxide Dismutase Arabidopsis Thaliana Extract Ergothioneine Ubiquinone Glycerin Tetrahexyldecyl Ascorbate Jojoba Esters Camellia Sinensis Leaf Extract Tocopheryl Acetate Chlorogenic Acids
Caution for sensitive skin
Lauryl Lactate Linolenic Acid Linoleic Acid Butylene Glycol Glycerin Citric Acid Camellia Sinensis Leaf Extract Acacia Senegal Gum Phenoxyethanol

Ingredients list

64 total
Lower hazard (1) Higher hazard (4)
All64 Skin Conditioning51 Fragrance12 Antioxidant12 Emollient10 Viscosity Controlling10 Hair Conditioning9 Emulsion Stabilising8 Humectant8
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
B
Ethylhexyl Olivate
(Skin Conditioning)
1
A
Cetearyl Alcohol
(Emulsion Stabilising, Opacifying, Foam Boosting, Viscosity Increasingagent Aqueous, Viscosity Increasing Agent, Emollient, Emulsifying, Viscosity Controlling)
Chlorogenic Acids
(Antioxidant, Skin Conditioning, Skin Protecting)
Hydrolyzed Sodium Hyaluronate
(Skin Conditioning)
1
B
Lauryl Lactate
(Fragrance, Skin Conditioning, Emollient)
1
Dimethyl Isosorbide
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
glycyrrhiza glabra root extract
(Bleaching, Perfuming, Skin Conditioning, Skin Conditioning Emollient, Smoothing, Soothing)
1
Tetrahexyldecyl Ascorbate
(Antioxidant, Skin Conditioning)
1
Ergothioneine
(Antioxidant)
Benzylidene Dimethoxydimethylindanone
(Skin Protecting)
1
Arabidopsis Thaliana Extract
(Antioxidant)
1
Carnosine
(Skin Conditioning)
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
Vitis Vinifera Seed Extract
(Anti Seborrheic, Antimicrobial, Antioxidant, Oral Care, Skin Protecting, Uv Absorber)
Theobroma Cacao Seed Extract
(Antioxidant)
Curcuma Longa Root Extract
(Fragrance, Perfuming)
Olea Europaea Fruit Extract
(Bleaching, Skin Conditioning)
1
Euterpe Oleracea Fruit Extract
(Hair Conditioning)
1
Trifluoroacetyl Tripeptide-2
(Skin Conditioning)
Buddleja Officinalis Flower Extract
(Uv Filter)
Coffea Arabica Leaf Cell Extract
(Antioxidant)
Crocus Sativus Leaf Cell Culture Extract
(Skin Protecting)
1
Superoxide Dismutase
(Reducing, Skin Conditioning, Antioxidant)
1
Ubiquinone
(Antioxidant, Skin Conditioning)
Zingiber Officinale Root Extract
(Fragrance, Perfuming, Skin Conditioning, Tonic)
1
Ceramide NP
(Hair Conditioning, Skin Conditioning)
Ceramide AP
(Hair Conditioning, Skin Conditioning)
Ceramide EOP
(Hair Conditioning, Skin Conditioning)
1
Linoleic Acid
(Fragrance, Hair Conditioning, Skin Conditioning, Sufactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Linoleic Acid., Antistatic Agent, Emollient)
Fungal Acne
Fungal Acne Trigger
1
Linolenic Acid
(Fragrance, Hair Conditioning, Skin Conditioning, Sufactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Linolenic Acid., Antistatic Agent, Emollient, Perfuming)
Fungal Acne
Fungal Acne Trigger
1
Sea Whip Extract
(Skin Conditioning)
Bisabolol
(Fragrance, Skin Conditioning, Soothing)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
3
Tocopheryl Acetate
(Antioxidant, Skin Conditioning)
Bad for Oily Skin
Bad for Oily Skin
1
A
Cholesterol
(Emulsion Stabilising, Skin Conditioning, Viscosity Increasing Agent, Emollient, Emulsifying, Stabilising, Viscosity Controlling)
1
Phytosphingosine
(Hair Conditioning, Skin Conditioning)
1
A
Jojoba Esters
(Emollient, Moisturising, Skin Conditioning, Soothing)
1
B
Sodium PCA
(Hair Conditioning, Humectant, Antistatic Agent, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
1
A
Pentylene Glycol
(Skin Conditioning, Solvent)
1
A
Methyl Gluceth-20
(Humectant, Moisturising)
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
Helianthus Annuus Seed Wax
(Skin Conditioning)
1
Acacia Decurrens Flower Wax
(Skin Conditioning, Emollient, Skin Protecting)
2
3
Lecithin
(Skin Conditioning, Emulsifying, Surfactant, Antistatic Agent, Emollient)
1
Sodium Lauroyl Lactylate
(Emulsifying, Surfactant)
1
B
Dicetyl Phosphate
(Emulsifying, Surfactant)
Propanediol Dicaprylate/Caprate
(Skin Conditioning Emollient)
1
Polyglycerin-3
(Humectant)
2
Ceteth-20 Phosphate
(Cleansing, Surfactant)
1
A
Diisostearyl Malate
(Skin Conditioning, Emollient, Surfactant)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
3
B
Steareth-2
(Emulsifying, Surfactant)
3
A
Acacia Senegal Gum
(Adhesive, Fragrance, Film Forming, Masking)
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
1
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
(Emulsion Stabilising, Film Forming, Viscosity Controlling)
1
A
Dextran
(Binding Agent, Bulking Agent, Binding, 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
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben

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

Butylene Glycol
Skin Conditioning, Humectant
Ethylhexyl Olivate
Skin Conditioning
Cetearyl Alcohol
Emollient
Chlorogenic Acids
Antioxidant, Skin Conditioning
Hydrolyzed Sodium Hyaluronate
Skin Conditioning
Lauryl Lactate
Skin Conditioning, Emollient

Benefits

Good for dry skin
Good for oily/acne-prone skin
Good for sensitive skin

Concerns

Contains paraben
Not fungal acne (malassezia) safe

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
Ethylhexyl Olivate
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Skin conditioning
Cetearyl Alcohol
Emulsion stabilising, Opacifying
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingOpacifyingFoam boostingViscosity increasingagent - aqueousViscosity increasing agentEmollientEmulsifyingViscosity controlling
Chlorogenic Acids
Antioxidant, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A AntioxidantSkin conditioningSkin protecting
Hydrolyzed Sodium Hyaluronate
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Lauryl Lactate
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B FragranceSkin conditioningEmollient
Dimethyl Isosorbide
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
glycyrrhiza glabra root extract
Bleaching, Perfuming
Limited public safety data.Read moreShow less
EWG N/A BleachingPerfumingSkin conditioningSkin conditioning emollientSmoothingSoothing
Tetrahexyldecyl Ascorbate
Antioxidant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 AntioxidantSkin conditioning
Ergothioneine
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 Antioxidant
Benzylidene Dimethoxydimethylindanone
Skin protecting
Limited public safety data.Read moreShow less
EWG N/A Skin protecting
Arabidopsis Thaliana Extract
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 Antioxidant
Carnosine
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Vitis Vinifera Seed Extract
Anti seborrheic, Antimicrobial
Limited public safety data.Read moreShow less
EWG N/A Anti seborrheicAntimicrobialAntioxidantOral careSkin protectingUv absorber
+ 40 more — see the full ingredients list above
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry 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
Linoleic Acid
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 FragranceHair conditioningSkin conditioningSufactantsurfactant-cleansing agent is included as a function for the soap form of linoleic acid.Antistatic agentEmollient Fungal-acne trigger
Linolenic Acid
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 FragranceHair conditioningSkin conditioningSufactantsurfactant-cleansing agent is included as a function for the soap form of linolenic acid.Antistatic agentEmollientPerfuming Fungal-acne trigger
Tocopheryl Acetate
Antioxidant, Skin conditioning
Potentially comedogenic - can block poresRead moreShow less
EWG 3 AntioxidantSkin conditioning Bad for Oily Skin
Sodium PCA
Hair conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Hair conditioningHumectantAntistatic agentSkin conditioning Good for Dry Skin
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
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 Morning only: Apply as the last step of your AM routine, after moisturiser, and reapply every ~2 hours of sun exposure.

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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