Once A Day Face Serum SPF 50+

Calypso

Once A Day Face Serum SPF 50+

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About this product

The Calypso Once A Day Face Serum SPF 50+ is a sunscreen. Our analysis of its 26 ingredients (21 low-risk) rates it Excellent (95/100). Based on its ingredients, it looks well-suited to sensitive skin.

Vegan-friendly

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Sunscreen
Ingredients
26
Low-risk
21
Fragrance
Fragrance-free
Origin
United Kingdom
SPF
50 · blocks 98.0% UVB
Data updated
May 2026

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 5/6
Good for dry skin
C12-15 Alkyl Benzoate Diisopropyl Adipate Caprylyl Glycol Glycerin Dimethicone
Caution for dry skin
Cellulose Sodium Stearoyl Glutamate Xanthan Gum Glycerin Potassium Cetyl Phosphate Sodium Hydroxide
Oily/Acne-Prone Skin No data
Sensitive Skin 4/4
Good for sensitive skin
Ascorbyl Glucoside Glycerin Hydroxyacetophenone Dimethicone
Caution for sensitive skin
Diisopropyl Adipate Arginine Glycerin Phenoxyethanol

Ingredients list

26 total
Lower hazard (1) Higher hazard (6)
All26 Skin Conditioning16 Uv Absorber7 Uv Filter7 Viscosity Controlling5 Fragrance4 Hair Conditioning4 Emollient4 Emulsion Stabilising3
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
3
Octocrylene
(Sunscreen Agent, Uv Absorber, Uv Filter)
Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine
(Skin Conditioning, Uv Absorber, Uv Filter)
2
Butyl Methoxydibenzoylmethane
(Uv Absorber, Uv Filter)
4
Ethylhexyl Salicylate
(Uv Absorber, Uv Filter)
1
A
Diisopropyl Adipate
(Fragrance, Plasticizer, Skin Conditioning, Emollient, Solvent, Masking)
1
A
C12-15 Alkyl Benzoate
(Skin Conditioning, Emollient, Antimicrobial)
3
A
Dimethicone
(Antifoaming Agent, Skin Protecting, Emollient, Skin Conditioning)
Silicone
Silicone
6
Ethylhexyl Methoxycinnamate
(Uv Absorber, Uv Filter)
Bad for Oily Skin
Bad for Oily Skin
Bad for Sensitive Skin
Bad for Sensitive Skin
1
Ethylhexyl Triazone
(Uv Absorber, Uv Filter)
3
Phenylbenzimidazole Sulfonic Acid
(Uv Absorber, Uv Filter)
1
A
Cellulose
(Absorbent, Bulking Agent, Slip Modifier, Opacifying, Viscosity Controlling)
1
A
Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant)
1
B
Potassium Cetyl Phosphate
(Emulsifying, Surfactant)
1
A
Arginine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
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
Ascorbyl Glucoside
(Antioxidant)
Hydrogenated Palm Glycerides
(Skin Conditioning, Skin Conditioning Emollient, Surfactant Emulsifying, Viscosity Controlling)
1
B
Sodium Stearoyl Glutamate
(Hair Conditioning, Skin Conditioning, Surfactant Cleansingagent, Emulsifying)
1
Hydroxyacetophenone
(Antioxidant)
1
Acrylates/Dimethicone Copolymer
(Anticaking Agent, Binding, Film Forming, Skin Conditioning)
1
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
(Emulsion Stabilising, Film Forming, Viscosity Controlling)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)

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

Chemical UV Filter
Absorbs UV rays to help prevent sun damage.
Antioxidants
Shields skin from free radical damage.
Vitamin C
Brightens, evens tone, and supports collagen.

Benefits

Scar HealingImproves the look of marks and scars.
HydratingBoosts hydration and relieves dry, tight skin.
BrighteningRestores radiance to dull, tired skin.
Reduces IrritationEases discomfort and supports skin resilience.
Good For Oily SkinBalances oil and helps reduce shine.
Redness ReducingSoothes visible redness and calms irritation.
Barrier RepairStrengthen and restore your skin's natural barrier.
Show all 7 benefits

Concerns

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

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Octocrylene
Sunscreen agent, Uv absorber
Low-to-moderate hazard.Read moreShow less
EWG 3 Sunscreen agentUv absorberUv filter
Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine
Skin conditioning, Uv absorber
Limited public safety data.Read moreShow less
EWG N/A Skin conditioningUv absorberUv filter
Butyl Methoxydibenzoylmethane
Uv absorber, Uv filter
Low-hazard ingredient.Read moreShow less
EWG 2 Uv absorberUv filter
Ethylhexyl Salicylate
Uv absorber, Uv filter
Low-to-moderate hazard.Read moreShow less
EWG 4 Uv absorberUv filter
Diisopropyl Adipate
Fragrance, Plasticizer
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragrancePlasticizerSkin conditioningEmollientSolventMasking
C12-15 Alkyl Benzoate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningEmollientAntimicrobial
Ethylhexyl Triazone
Uv absorber, Uv filter
Low-hazard ingredient.Read moreShow less
EWG 1 Uv absorberUv filter
Phenylbenzimidazole Sulfonic Acid
Uv absorber, Uv filter
Low-to-moderate hazard.Read moreShow less
EWG 3 Uv absorberUv filter
Cellulose
Absorbent, Bulking agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AbsorbentBulking agentSlip modifierOpacifyingViscosity controlling
Caprylyl Glycol
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningEmollientHumectant
Potassium Cetyl Phosphate
Emulsifying, Surfactant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B EmulsifyingSurfactant
Arginine
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceHair conditioningSkin conditioningAntistatic agentMasking
Ascorbyl Glucoside
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 Antioxidant
Hydrogenated Palm Glycerides
Skin conditioning, Skin conditioning emollient
Limited public safety data.Read moreShow less
EWG N/A Skin conditioningSkin conditioning emollientSurfactant emulsifyingViscosity controlling
+ 7 more — see the full ingredients list above
Dimethicone
Antifoaming agent, Skin protecting
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A Antifoaming agentSkin protectingEmollientSkin conditioning Silicone
Ethylhexyl Methoxycinnamate
Uv absorber, Uv filter
Potentially a skin irritantRead moreShow less
EWG 6 Uv absorberUv filter Bad for Oily SkinBad for Sensitive 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
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben

How to use

How to use

  • 1 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.

Ascorbyl Glucoside

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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