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ROUND LAB Birch Juice Moisturising Sun Cushion SPF50+ PA++++
ROUND LAB

ROUND LAB Birch Juice Moisturising Sun Cushion SPF50+ PA++++

SPF 50Efficacy90/100IrritancyLow·3 UV filters
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Works for

2 of 2 advertised claims delivered

Sun protection
SPF 50 · 3 UV filters
Broad spectrum
SPF 50Broad spectrumMineral + chemical filters

This product offers a good level of protection against both UVB and UVA rays.

This sunscreen uses organic (so-called "chemical") sunscreen filters. Organic, or "chemical" filters usually provide reliable sun protection and rarely leave a white cast. Sunscreens with organic filters can sting eyes.

This product can be considered "reef safe" because it does not contain the UV filters (oxybenzone and octinoxate) that can be harmful to coral reefs when present in the water in high concentrations.

UV spectrum
UVB290–320 nmUVA II320–340 nmUVA I340–400 nm
Butyloctyl Salicylate
Titanium Dioxide
Zinc Oxide
FilterCoverageWhat it doesEst. amount
Butyloctyl SalicylateUVBA synthetic ester of salicylic acid that is used to help disperse pigments and boost effectiveness of sunscreen ingredients. It is able to absorb UV light (working as an organic, or chemical filter), but is not approved as a sunscreen ingredient on its own~2.4–2.9%
Titanium Dioxide Mineral UVBUVA2 Photo-stable Works as a UV filter when used in high concentrations. It is photostable and is effective mostly against the UVB light, with some protection in the UVA range. In small concentrations, used for its ability to improve the color of cosmetic products. Is usually well tolerated by the skin~3.9–4.8%
Zinc Oxide Mineral UVBUVA Photo-stable A broad spectrum sunblock (protects from both UVA and UVB rays). Is suitable for most sensitive skins. In small concentrations, can be used as a colorant~12–15%
~ marks concentrations estimated from label position and typical use levels
Reef-safe
No oxybenzone or octinoxate — the two filters banned in Hawaii, Florida Keys and Aruba.
Moisturizing
20 ingredients credited for this claim
Good support
What the product description says
“Birch Juice Moisturising Sun Cushion SPF50+ PA++++”
From product name

This product contains good ingredients to attract water to the upper layer of the skin. These ingredients are called "humectants": glycerin, glyceryl glucoside.

When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from within deeper layers of the skin. If the air is dry, humectants can speed up the moisture loss from the skin. This is why it is a good idea to use another product on top of this one to help "seal in" the moisture (look for ingredients like dimethicone, squalane, oils and butters).

Glyceryl glucosideKey active· HumectantEffect: HighCan help to restore skin barrier function and soften its upper layer~0.6–0.9%
GlycerinKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant~1.2–1.4%
Laminaria japonica extractKey activeEffect: HighSeaweed extract that might help to attract water to the upper layer of the skin and have some anti-oxidant properties~0.55–0.85%
Sodium hyaluronateKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Attracts water into the upper layer of the skin~0.45–0.7%
Hyaluronic acidKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Attracts water into the upper layer of the skin. Naturally present in skin. Typically has large molecule size unless advertised otherwise on the product label. Helps support skin's barrier function and may help to reduce inflammation~0.45–0.65%
Ulmus davidiana root extractKey activeEffect: MediumA plant root extract that helps attract water to the upper layer of the skin. It might have an anti-inflammatory effect and could help neturalize free radicals in skin~0.55–0.85%
Butylene glycol dicaprylate/dicaprateKey active· EmollientEffect: MediumHelps soften the upper layer of the skin~2.7–3.3%
Diisostearyl malateKey active· EmollientEffect: MediumHelps to soften the upper layer of the skin~0.7–1.05%
Dimer dilinoleyl dimer dilinoleate· EmollientEffect: LowHelps create a nice product texture and soften the upper layer of the skin~0.4–0.65%
Glyceryl caprylate· EmollientEffect: LowAn emollient that can also help water and oil mix together, as well as prevent bacteria growth in products~0.2–0.4%
Caprylyl methiconeEffect: LowA type of silicone that helps to soften the upper layer of the skin and create a nice product finish on the skin~6–7.4%
Caprylyl glycol· Humectant, EmollientEffect: LowHelps preserve products and creates a nice product texture~0.15–0.3%
Butylene glycol· HumectantEffect: LowUsed to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin~0.4–0.6%
Portulaca oleracea extract· HumectantEffect: LowA plant extract that has some anti-oxidant activity, but solid research is lacking. Can help attract water to the upper layer of the skin~0.45–0.65%
Dicaprylyl carbonate· EmollientEffect: LowHelps products spread more easily and works as an emollient to soften skin~0.25–0.5%
Dipotassium glycyrrhizateUnder-dosedEffect: HighA salt derived from licorice. Works as an emollient to soften the upper layer of the skin and can help calm down inflammation. Might be helpful for skin lightening~0.4–0.6%
AllantoinUnder-dosedEffect: HighHelps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated~0.35–0.6%
TocopherolEffect: Low, below effective dosePure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself~0.15–0.25%
Aloe barbadensis leaf extractEffect: Low, below effective doseTraditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin~0.6–0.9%
Stearic acidEffect: Low, below effective doseHelps oil and water mix together and works as an emollient~0.5–0.75%
Anti-aging
Not advertised by the brand · 3 ingredients credited for this claim
Strong support

This product can help prevent early signs of skin aging because it offers a good level of broad spectrum sun protection. Sun damage is the main cause of premature skin aging, and protecting your skin from the sun is the best anti-aging strategy.

Hyaluronic acidEffect: LowOne of the best moisturizing ingredients. Attracts water into the upper layer of the skin. Naturally present in skin. Typically has large molecule size unless advertised otherwise on the product label. Helps support skin's barrier function and may help to reduce inflammation~0.45–0.65%
Ascorbic acidUnder-dosedEffect: HighThe most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of aging~0.35–0.65%
TocopherolEffect: Low, below effective dosePure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself~0.15–0.25%
Evens skin tone
Not advertised by the brand · 2 ingredients credited for this claim
Strong support

This product offers broad spectrum sun protection. It means that it can prevent hyperpigmentation and help keep the skin tone even (sun damage is the main factor causing age spots, darkening of post-acne marks and other discolorations).

Ascorbic acidUnder-dosedEffect: HighThe most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of aging~0.35–0.65%
Dipotassium glycyrrhizateEffect: Low, below effective doseA salt derived from licorice. Works as an emollient to soften the upper layer of the skin and can help calm down inflammation. Might be helpful for skin lightening~0.4–0.6%

Can it cause trouble?

Irritancy
12 flagged ingredients
Low risk
We flag 12 ingredients with irritancy potential; the product's overall irritancy is low. The table lists each ingredient's own rating.
IngredientFunctionIrritationEst. amount
Ulmus davidiana root extractA plant root extract that helps attract water to the upper layer of the skin. It might have an anti-inflammatory effect and could help neturalize free radicals in skinHigh~0.55–0.85%est.
Ascorbic acidThe most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of agingHigh~0.35–0.65%est.
Butyloctyl salicylateA synthetic ester of salicylic acid that is used to help disperse pigments and boost effectiveness of sunscreen ingredients. It is able to absorb UV light (working as an organic, or chemical filter), but is not approved as a sunscreen ingredient on its ownMedium~2.4–2.9%est.
Polyglyceryl-4 diisostearate/polyhydroxystearate/sebacateHelps water and oil mix togetherMedium~2–2.5%est.
Diisostearyl malateHelps to soften the upper layer of the skinMedium~0.7–1.05%est.
EthylhexylglycerinA preservativeMedium~0.6–0.85%est.
Aloe barbadensis leaf extractTraditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skinMedium~0.6–0.9%est.
Portulaca oleracea extractA plant extract that has some anti-oxidant activity, but solid research is lacking. Can help attract water to the upper layer of the skinMedium~0.45–0.65%est.
Polyglyceryl-6 polyricinoleateHelps oil and water mix togetherMedium~0.35–0.6%est.
1,2-hexanediolA preservativeMedium~0.2–0.35%est.
Sorbitan caprylateHelps oil and water mix togetherMedium~0.25–0.4%est.
Caprylyl glycolHelps preserve products and creates a nice product textureMedium~0.15–0.3%est.
Comedogenic
1 ingredient rated 2 or more on the 0–5 pore-clogging scale
1 flagged
These ingredients have a comedogenic rating of 2 or more on a 0–5 scale; the table shows each one's rating. In leave-on products they can clog pores in acne-prone skin.
IngredientFunctionRatingEst. amount
Laminaria japonica extractSeaweed extract that might help to attract water to the upper layer of the skin and have some anti-oxidant properties3/5~0.55–0.85%est.
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Ingredients

Filter by role to see what each ingredient is doing.

Water~45–55%
Formula
Irritation risk
Low

Plain old water

More about Water
Zinc oxide~12–15%
UV filterKey active
Irritation risk
Low
Works for
Sun protection

A broad spectrum sunblock (protects from both UVA and UVB rays). Is suitable for most sensitive skins. In small concentrations, can be used as a colorant

More about Zinc oxide
Caprylyl methicone~6–7.4%
Formula
Irritation risk
Low
Works for
Moisturizing

A type of silicone that helps to soften the upper layer of the skin and create a nice product finish on the skin

More about Caprylyl methicone
Methyl trimethicone~4–4.9%
Formula
Irritation risk
Low

A type of silicone that helps create a silky product finish and dissolve other ingredients

More about Methyl trimethicone
Titanium dioxide~3.9–4.8%
UV filterKey active
Irritation risk
Low
Works for
Sun protection

Works as a UV filter when used in high concentrations. It is photostable and is effective mostly against the UVB light, with some protection in the UVA range. In small concentrations, used for its ability to improve the color of cosmetic products. Is usually well tolerated by the skin

More about Titanium dioxide
Butylene glycol dicaprylate/dicaprate~2.7–3.3%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps soften the upper layer of the skin

More about Butylene glycol dicaprylate/dicaprate
Butyloctyl salicylate~2.4–2.9%
UV filterKey activeIrritant · medium
Irritation risk
Medium
Works for
Sun protection

A synthetic ester of salicylic acid that is used to help disperse pigments and boost effectiveness of sunscreen ingredients. It is able to absorb UV light (working as an organic, or chemical filter), but is not approved as a sunscreen ingredient on its own

More about Butyloctyl salicylate
Polyglyceryl-4 diisostearate/polyhydroxystearate/sebacate~2–2.5%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps water and oil mix together

More about Polyglyceryl-4 diisostearate/polyhydroxystearate/sebacate
Propanediol~1.5–1.8%
Formula
Irritation risk
Low

Acts as a solvent for other ingredients. Speeds up the absorption of other ingredients into the skin

More about Propanediol
Glycerin~1.2–1.4%
Key active
Irritation risk
Low
Works for
Moisturizing

One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant

More about Glycerin
Methyl methacrylate crosspolymer~0.95–1.15%
Formula
Irritation risk
Low
Works for
Mattifying

Helps thicken the product consistency

More about Methyl methacrylate crosspolymer
Diisostearyl malate~0.7–1.05%
Key activeIrritant · medium
Irritation risk
Medium
Works for
CleansingMoisturizing

Helps to soften the upper layer of the skin

More about Diisostearyl malate
Glyceryl glucoside~0.6–0.9%
Key active
Irritation risk
Low
Works for
Moisturizing

Can help to restore skin barrier function and soften its upper layer

More about Glyceryl glucoside
Ethylhexylglycerin~0.6–0.85%
Irritant · medium
Irritation risk
Medium

A preservative

More about Ethylhexylglycerin
Laminaria japonica extract~0.55–0.85%
Key activeComedogenic 3/5
Irritation risk
Low
Comedogenicity
3/5
Works for
Moisturizing

Seaweed extract that might help to attract water to the upper layer of the skin and have some anti-oxidant properties

More about Laminaria japonica extract
Ulmus davidiana root extract~0.55–0.85%
Key activeIrritant · high
Irritation risk
High
Works for
MoisturizingAnti-oxidation

A plant root extract that helps attract water to the upper layer of the skin. It might have an anti-inflammatory effect and could help neturalize free radicals in skin

More about Ulmus davidiana root extract
Aloe barbadensis leaf extract~0.6–0.9%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Traditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin

More about Aloe barbadensis leaf extract
Viola mandshurica flower extract~0.55–0.8%
Formula
Irritation risk
Low
More about Viola mandshurica flower extract
Dioscorea japonica root extract~0.45–0.7%
Formula
Irritation risk
Low
More about Dioscorea japonica root extract
Sodium hyaluronate~0.45–0.7%
Key active
Irritation risk
Low
Works for
Moisturizing

One of the best moisturizing ingredients. Attracts water into the upper layer of the skin

More about Sodium hyaluronate
Hyaluronic acid~0.45–0.65%
Key active
Irritation risk
Low
Works for
MoisturizingAnti-inflammatoryAnti-aging

One of the best moisturizing ingredients. Attracts water into the upper layer of the skin. Naturally present in skin. Typically has large molecule size unless advertised otherwise on the product label. Helps support skin's barrier function and may help to reduce inflammation

More about Hyaluronic acid
Dipotassium glycyrrhizate~0.4–0.6%
Under-dosed
Irritation risk
Low
Works for
MoisturizingAnti-inflammatoryEvens skin tone

A salt derived from licorice. Works as an emollient to soften the upper layer of the skin and can help calm down inflammation. Might be helpful for skin lightening

More about Dipotassium glycyrrhizate
Allantoin~0.35–0.6%
Under-dosed
Irritation risk
Low
Works for
Anti-inflammatoryMoisturizingReduces rednessAnti-blemishReduces irritationExfoliation

Helps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated

More about Allantoin
Portulaca oleracea extract~0.45–0.65%
Irritant · medium
Irritation risk
Medium
Works for
MoisturizingAnti-oxidation

A plant extract that has some anti-oxidant activity, but solid research is lacking. Can help attract water to the upper layer of the skin

More about Portulaca oleracea extract
Betula platyphylla japonica juice~0.35–0.65%
Formula
Irritation risk
Low
More about Betula platyphylla japonica juice
Ascorbic acid~0.35–0.65%
Under-dosedIrritant · high
Irritation risk
High
Works for
Evens skin toneAnti-agingAnti-oxidation

The most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of aging

More about Ascorbic acid
Butylene glycol~0.4–0.6%
Formula
Irritation risk
Low
Works for
Moisturizing

Used to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin

More about Butylene glycol
Dimer dilinoleyl dimer dilinoleate~0.4–0.65%
Formula
Irritation risk
Low
Works for
Moisturizing

Helps create a nice product texture and soften the upper layer of the skin

More about Dimer dilinoleyl dimer dilinoleate
Magnesium sulfate~0.35–0.65%
Formula
Irritation risk
Low

Used to create a thicker product consistency

More about Magnesium sulfate
Aluminum hydroxide~0.4–0.65%
Formula
Irritation risk
Low

Is used to add opaque (non-transparent) appearance to formulations. Can be used to coat other ingredients for even dispersion. This is a different ingredient compared to the ones used in antipersperants (aluminium chloride and aluminium chlorohydrate)

More about Aluminum hydroxide
Disteardimonium hectorite~0.3–0.6%
Formula
Irritation risk
Low

A type of clay that is used to thicken the product consistency

More about Disteardimonium hectorite
Stearic acid~0.5–0.75%
Formula
Irritation risk
Low
Works for
CleansingMoisturizing

Helps oil and water mix together and works as an emollient

More about Stearic acid
Triethoxycaprylylsilane~0.3–0.6%
Formula
Irritation risk
Low

A type of silicone that helps oil and water mix well together. Helps to disperse other ingredients, e.g. pigments, evenly in a formulation

More about Triethoxycaprylylsilane
Polyglyceryl-6 polyricinoleate~0.35–0.6%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps oil and water mix together

More about Polyglyceryl-6 polyricinoleate
1,2-hexanediol~0.2–0.35%
Irritant · medium
Irritation risk
Medium

A preservative

More about 1,2-hexanediol
Dicaprylyl carbonate~0.25–0.5%
Formula
Irritation risk
Low
Works for
Moisturizing

Helps products spread more easily and works as an emollient to soften skin

More about Dicaprylyl carbonate
Sorbitan caprylate~0.25–0.4%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps oil and water mix together

More about Sorbitan caprylate
Glyceryl caprylate~0.2–0.4%
Formula
Irritation risk
Low
Works for
CleansingMoisturizing

An emollient that can also help water and oil mix together, as well as prevent bacteria growth in products

More about Glyceryl caprylate
Caprylyl glycol~0.15–0.3%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Helps preserve products and creates a nice product texture

More about Caprylyl glycol
Tocopherol~0.15–0.25%
Formula
Irritation risk
Low
Works for
Anti-oxidationAnti-agingAnti-inflammatoryMoisturizing

Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself

More about Tocopherol
Ingredient list view

Water, Zinc oxide, Caprylyl methicone, Methyl trimethicone, Titanium dioxide, Butylene glycol dicaprylate/dicaprate, Butyloctyl salicylate, Polyglyceryl-4 diisostearate/polyhydroxystearate/sebacate, Propanediol, Glycerin, Methyl methacrylate crosspolymer, Diisostearyl malate, Glyceryl glucoside, Ethylhexylglycerin, Laminaria japonica extract, Ulmus davidiana root extract, Aloe barbadensis leaf extract, Viola mandshurica flower extract, Dioscorea japonica root extract, Sodium hyaluronate, Hyaluronic acid, Dipotassium glycyrrhizate, Allantoin, Portulaca oleracea extract, Betula platyphylla japonica juice, Ascorbic acid, Butylene glycol, Dimer dilinoleyl dimer dilinoleate, Magnesium sulfate, Aluminum hydroxide, Disteardimonium hectorite, Stearic acid, Triethoxycaprylylsilane, Polyglyceryl-6 polyricinoleate, 1,2-hexanediol, Dicaprylyl carbonate, Sorbitan caprylate, Glyceryl caprylate, Caprylyl glycol, Tocopherol

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Product summary

The ingredient list suggests that "ROUND LAB - Birch Juice Moisturising Sun Cushion SPF50+ PA++++" can provide reliable sun protection. It can protect from both UVA and UVB rays. This is great news because not all sunscreens with SPF ratings give UVA protection. (UVA rays do not cause sunburn, but still damage our skin and lead to early aging).

It also works as a moisturizer, so you do not have to use an additional hydrating product. Like all broad-spectrum sunscreens, this product has an anti-aging benefit.

Sunscreen filters

This sunscreen uses a mixture of both mineral and organic (so-called "chemical") UV filters. Here are the organic filters this product uses: butyloctyl salicylate. As for the mineral filters, this sunscreen uses both titanium dioxide and zinc oxide.

Irritation risk

There are actives in this product that can be irritating. We assess the overall irritancy of this moisturizer to be low. For a detailed overview of all potential irritants: click here

You can see the detailed formula review with the breakdown of all actives in the product and the full ingredient list with estimated concentrations in the tables below.

Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 26 studies and safety reviews.

  1. 1
    A review of inorganic UV filters zinc oxide and titanium dioxideonlinelibrary.wiley.com
  2. 2
    Risk assessment of zinc oxide, a cosmetic ingredient used as a UV filter of sunscreensncbi.nlm.nih.gov
  3. 3
    Characterization of the UVA protection provided by avobenzone, zinc oxide, and titanium dioxide in broad-spectrum sunscreen productsncbi.nlm.nih.gov
  4. 4
    Ultraviolet Protection Properties of Commercial Sunscreens and Sunscreens Containing Zno Nanorodsiopscience.iop.org
  5. 5
    ZnO nanoparticles and organic chemical UV-filters are equally well tolerated by human immune cellsncbi.nlm.nih.gov
  6. 6
    Safety assessment of Salicylic Acid, Butyloctyl Salicylate, Calcium Salicylate, C12-15 Alkyl Salicylate, Capryloyl Salicylic Acid, Hexyldodecyl Salicylate, Isocetyl Salicylate, Isodecyl Salicylate, Magnesium Salicylate, MEA-Salicylate, Ethylhexyl Salicylate, Potassium Salicylate, Methyl Salicylate, Myristyl Salicylate, Sodium Salicylate, TEA-Salicylate, and Tridecyl Salicylatencbi.nlm.nih.gov
ROUND LAB Birch Juice Moisturising Sun Cushion SPF50+ PA++++
ROUND LABBirch Juice Moisturising Sun Cushion SPF50+ PA++++
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