Hydra-Youth Serum

Skin Gym

Where to buy Possibly in stock

About this product

The Skin Gym Hydra-Youth Serum is a serums, essence, ampoule. Our analysis of its 24 ingredients (16 low-risk) rates it Excellent (98/100).

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
24
Low-risk
16
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 6/8
Good for dry skin
Caprylic/Capric Triglyceride Sodium Hyaluronate Glycerin Coco-Caprylate/Caprate Polyglyceryl-10 Isostearate DATEM
Caution for dry skin
Sodium Starch Octenylsuccinate Xanthan Gum Glycerin Polyglyceryl-10 Isostearate DATEM Bentonite Sodium Hydroxide Silica
Oily/Acne-Prone Skin No data
Sensitive Skin 2/4
Good for sensitive skin
Gigartina Stellata Extract Glycerin
Caution for sensitive skin
Caprylic/Capric Triglyceride Glycerin Citric Acid Phenoxyethanol

Ingredients list

24 total
Lower hazard (1) Higher hazard (4)
All24 Skin Conditioning18 Fragrance8 Emulsion Stabilising6 Viscosity Controlling5 Solvent5 Emollient4 Viscosity Increasing Agent3 Hair Conditioning3
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
A
Pentylene Glycol
(Skin Conditioning, Solvent)
1
B
Coco-Caprylate/Caprate
(Emollient, Skin Conditioning)
1
B
Polyglyceryl-10 Isostearate
(Skin Conditioning, Emollient, Emulsifying, Surfactant)
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
Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, Solvent)
2
A
Bentonite
(Absorbent, Bulking Agent, Emulsion Stabilising, Opacifying, Suspending Agent Nonsurfactant, Viscosity Increasing Agent, Viscosity Controlling)
cocos nucifera oil
(Fragrance, Hair Conditioning, Perfuming, Skin Conditioning)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
Helianthus Annuus Seed Oil
(Fragrance, Skin Conditioning, Skin Conditioning Emollient)
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
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
1
A
Sodium Starch Octenylsuccinate
(Absorbent, Emulsion Stabilising, Viscosity Increasing Agent, Viscosity Controlling)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
1
Gigartina Stellata Extract
(Skin Protecting)
Crocus Sativus Stigma Extract
(Skin Conditioning)
1
DATEM
(Hair Conditioning, Skin Conditioning, Emollient, Emulsifying, Surfactant)
daucus carota sativa root extract
(Skin Conditioning)
rosmarinus officinalis leaf extract
(Antimicrobial, Fragrance, Skin Conditioning)
ASCORBIC ACID
(Antioxidant, Buffering, Fragrance, Skin Conditioning)
1
2
A
Silica
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Viscosity Controlling)

My Ingredient Notes

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Key ingredients

Pentylene Glycol
Skin Conditioning
Coco-Caprylate/Caprate
Emollient, Skin Conditioning
Polyglyceryl-10 Isostearate
Skin Conditioning, Emollient
Glycerin
Humectant, Skin Protecting
Caprylic/Capric Triglyceride
Emollient, Skin Conditioning
cocos nucifera oil
Skin Conditioning

Benefits

No standout benefits flagged for this product.

Concerns

Contains paraben
Not fungal acne (malassezia) safe
May not suit dry skin
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
Pentylene Glycol
Skin conditioning, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSolvent
Coco-Caprylate/Caprate
Emollient, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B EmollientSkin conditioning
Polyglyceryl-10 Isostearate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Skin conditioningEmollientEmulsifyingSurfactant
Caprylic/Capric Triglyceride
Emollient, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientMaskingPerfumingSkin conditioningSolvent
Bentonite
Absorbent, Bulking agent
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A AbsorbentBulking agentEmulsion stabilisingOpacifyingSuspending agent -nonsurfactantViscosity increasing agentViscosity controlling
cocos nucifera oil
Fragrance, Hair conditioning
Limited public safety data.Read moreShow less
EWG N/A FragranceHair conditioningPerfumingSkin conditioning
Helianthus Annuus Seed Oil
Fragrance, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A FragranceSkin conditioningSkin conditioning emollient
Xanthan Gum
Binding agent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentEmulsion stabilisingSkin conditioningSurfactant -emulsifying agentViscosity increasing agentBindingGel formingViscosity controlling
Sodium Hydroxide
Denaturant, Ph adjuster
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B DenaturantPh adjusterBuffering agent
TOCOPHEROL
Antioxidant, Fragrance
Limited public safety data.Read moreShow less
EWG N/A AntioxidantFragranceSkin conditioning
Sodium Starch Octenylsuccinate
Absorbent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AbsorbentEmulsion stabilisingViscosity increasing agentViscosity controlling
Gigartina Stellata Extract
Skin protecting
Low-hazard ingredient.Read moreShow less
EWG 1 Skin protecting
Crocus Sativus Stigma Extract
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
+ 5 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
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
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry 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.

ASCORBIC 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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