Birch Juice Moisturizing UVLock Sunscreen SPF 45

Round Lab

Birch Juice Moisturizing UVLock Sunscreen SPF 45

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About this product

The Round Lab Birch Juice Moisturizing UVLock Sunscreen SPF 45 is a emulsion. Our analysis of its 44 ingredients (38 low-risk) rates it Excellent (98/100). Based on its ingredients, it looks well-suited to dry skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Emulsion
Ingredients
44
Low-risk
38
Fragrance
Fragrance-free
Origin
South Korea
SPF
45 · blocks 97.8% UVB

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 10/4
Good for dry skin
Glyceryl Glucoside Glyceryl Stearate Citrate Diethylhexyl 2,6-Naphthalate Cetearyl Alcohol Butylene Glycol Sodium Hyaluronate Glycerin Polyglyceryl-3 Distearate Hyaluronic Acid Sparassis Crispa Extract
Caution for dry skin
Sodium Stearoyl Glutamate Glycerin Polyglyceryl-3 Distearate Acrylates Copolymer
Oily/Acne-Prone Skin No data
Sensitive Skin 2/8
Good for sensitive skin
Glycerin Allantoin
Caution for sensitive skin
Dipropylene Glycol Anthemis Nobilis Flower Oil Butylene Glycol Glycerin Pinus Sylvestris Leaf Oil Tromethamine Homosalate Artemisia Annua Extract

Ingredients list

44 total
Lower hazard (1) Higher hazard (4)
All44 Skin Conditioning33 Solvent10 Viscosity Controlling9 Emulsion Stabilising8 Humectant7 Uv Absorber7 Fragrance7 Masking6
EWG CIR Ingredient Name & Cosmetic Functions Notes
2
Butyl Methoxydibenzoylmethane
(Uv Absorber, Uv Filter)
4
Homosalate
(Fragrance, Sunscreen Agent, Uv Absorber, Skin Conditioning, Uv Filter)
4
Ethylhexyl Salicylate
(Uv Absorber, Uv Filter)
1
Water
(Solvent)
1
B
Butyloctyl Salicylate
(Hair Conditioning, Skin Conditioning, Solvent)
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
2
B
Acrylates Copolymer
(Adhesive, Artificial Nail Builder, Binding Agent, Film Forming, Hair Fixing, Suspending Agent Nonsurfactant, Antistatic Agent, Binding)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
Caprylyl Methicone
(Skin Conditioning)
1
Polyglyceryl-3 Distearate
(Skin Conditioning, Emollient, Emulsifying, Surfactant)
1
Benzotriazolyl Dodecyl p-Cresol
(Uv Absorber)
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
1
Diethylhexyl 2,6-Naphthalate
(Skin Conditioning, Emollient, Solvent, Uv Absorber)
1
Polymethylsilsesquioxane
(Opacifying)
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
Calcium Aluminum Borosilicate
(Bulking Agent)
1
A
1,2-Hexanediol
(Solvent)
1
Poly C10-30 Alkyl Acrylate
(Binding Agent, Emulsion Stabilising, Viscosity Increasing Agent, Viscosity Controlling)
1
A
Pentylene Glycol
(Skin Conditioning, Solvent)
1
A
Cetearyl Alcohol
(Emulsion Stabilising, Opacifying, Foam Boosting, Viscosity Increasingagent Aqueous, Viscosity Increasing Agent, Emollient, Emulsifying, Viscosity Controlling)
2
A
Tromethamine
(Fragrance, Ph Adjuster, Buffering Agent, Masking)
1
Methylpropanediol
(Solvent)
1
B
Glyceryl Stearate Citrate
(Skin Conditioning, Emollient, Emulsifying)
Fungal Acne
Fungal Acne Trigger
1
Betula Platyphylla Japonica Juice
(Skin Conditioning)
1
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
(Emulsion Stabilising, Film Forming, Viscosity Controlling)
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
Artemisia Annua Extract
(Masking)
1
Anthemis Nobilis Flower Oil
(Masking, Perfuming, Skin Conditioning)
Good for Sensitive Skin
Good for Sensitive Skin
Good for Dry Skin
Good for Dry Skin
1
B
Sodium Stearoyl Glutamate
(Hair Conditioning, Skin Conditioning, Surfactant Cleansingagent, Emulsifying)
1
Glyceryl Polymethacrylate
(Film Forming, Viscosity Controlling)
1
Triethoxycaprylylsilane
(Binding Agent, Binding)
2
Pinus Sylvestris Leaf Oil
(Masking)
Sparassis Crispa Extract
(Emulsion Stabilising, Hair Conditioning, Humectant, Skin Conditioning)
1
Polyether-1
(Viscosity Increasing Agent, Viscosity Controlling)
1
A
Allantoin
(Skin Conditioning, Skin Protecting, Soothing)
Good for Oily Skin
Good for Oily Skin
Good for Sensitive Skin
Good for Sensitive Skin
1
A
Dipropylene Glycol
(Fragrance, Solvent, Viscosity Decreasing Agent, Masking, Viscosity Controlling)
1
Glyceryl Glucoside
(Humectant, Skin Conditioning)
1
A
Biosaccharide Gum-1
(Skin Conditioning)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
1
Portulaca Oleracea Extract
(Skin Conditioning)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
1
A
Hyaluronic Acid
(Skin Conditioning, Viscosity Increasing Agent, Antistatic Agent, Humectant, Moisturising)
ASCORBIC ACID
(Antioxidant, Buffering, Fragrance, Skin Conditioning)

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

Butyl Methoxydibenzoylmethane
Uv Absorber, Uv Filter
Homosalate
Uv Absorber, Skin Conditioning
Ethylhexyl Salicylate
Uv Absorber, Uv Filter
Butyloctyl Salicylate
Skin Conditioning
Butylene Glycol
Skin Conditioning, Humectant
Caprylyl Methicone
Skin Conditioning

Benefits

Good for dry skin

Concerns

Not fungal acne (malassezia) safe
May not suit sensitive skin

Ingredients explained

Butyl Methoxydibenzoylmethane
Uv absorber, Uv filter
Low-hazard ingredient.Read moreShow less
EWG 2 Uv absorberUv filter
Homosalate
Fragrance, Sunscreen agent
Low-to-moderate hazard.Read moreShow less
EWG 4 FragranceSunscreen agentUv absorberSkin conditioningUv filter
Ethylhexyl Salicylate
Uv absorber, Uv filter
Low-to-moderate hazard.Read moreShow less
EWG 4 Uv absorberUv filter
Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Butyloctyl Salicylate
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Hair conditioningSkin conditioningSolvent
Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
Acrylates Copolymer
Adhesive, Artificial nail builder
Low-hazard ingredient.Read moreShow less
EWG 2 CIR B AdhesiveArtificial nail builderBinding agentFilm formingHair fixingSuspending agent -nonsurfactantAntistatic agentBinding
Caprylyl Methicone
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Polyglyceryl-3 Distearate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningEmollientEmulsifyingSurfactant
Benzotriazolyl Dodecyl p-Cresol
Uv absorber
Low-hazard ingredient.Read moreShow less
EWG 1 Uv absorber
Niacinamide
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningSmoothing
Diethylhexyl 2,6-Naphthalate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningEmollientSolventUv absorber
Polymethylsilsesquioxane
Opacifying
Low-hazard ingredient.Read moreShow less
EWG 1 Opacifying
Calcium Aluminum Borosilicate
Bulking agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Bulking agent
1,2-Hexanediol
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Solvent
+ 23 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
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
Glyceryl Stearate Citrate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Skin conditioningEmollientEmulsifying Fungal-acne trigger
Anthemis Nobilis Flower Oil
Masking, Perfuming
Low-hazard ingredient.Read moreShow less
EWG 1 MaskingPerfumingSkin conditioning Good for Sensitive SkinGood for Dry Skin
Allantoin
Skin conditioning, Skin protecting
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSkin protectingSoothing Good for Oily SkinGood for Sensitive Skin
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 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.

ASCORBIC ACID

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

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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