Round Lab Birch Juice Mild-Up UVLock SPF 50+
A sunscreen that contains hyaluronic acid, spf, vitamin c and vitamin e.
Overview
What it is
Sunscreen with 35 ingredients that contains hyaluronic acid, SPF, Vitamin C and Vitamin E
Suited For
It has ingredients that are good for fighting acne, anti aging, dry skin, brightening skin, reducing pores, scar healing, dark spots and better texture
Free From
It doesn't contain any harsh alcohols, common allergens or parabens
Fun facts
Round Lab is from South Korea. This product is used in 3 routines created by our community.
We independently verify ingredients and our claims are backed by peer-reviewed research. Does this product need an update? Let us know.
About this product
Ingredients List
Dive into the full list of ingredients.
Water
Skin ConditioningCyclohexasiloxane
EmollientButyloctyl Salicylate
Skin ConditioningPropanediol
SolventPropylheptyl Caprylate
EmollientIsododecane
EmollientCaprylyl Methicone
Skin ConditioningPolyglyceryl-3 Polydimethylsiloxyethyl Dimethicone
Skin ConditioningMethyl Methacrylate Crosspolymer
Methyl Trimethicone
Skin ConditioningDisteardimonium Hectorite
StabilisingMagnesium Sulfate
Triethoxycaprylylsilane
1,2-Hexanediol
Skin ConditioningPolyglyceryl-2 Dipolyhydroxystearate
Skin ConditioningPolymethylsilsesquioxane
Lauryl Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone
Skin ConditioningButylene Glycol
HumectantBetula Platyphylla Japonica Juice
Skin ConditioningGlyceryl Caprylate
EmollientCaprylyl Glycol
EmollientEthylhexylglycerin
Skin ConditioningArtemisia Annua Extract
MaskingAnthemis Nobilis Flower Oil
MaskingSodium Hyaluronate
HumectantPinus Sylvestris Leaf Oil
MaskingGlycerin
HumectantNelumbo Nucifera Leaf Extract
Skin ConditioningCryptomeria Japonica Leaf Extract
HumectantSaccharomyces Ferment Filtrate
HumectantTocopherol
AntioxidantGlyceryl Glucoside
HumectantHyaluronic Acid
HumectantAscorbic Acid
AntioxidantZinc Oxide
Cosmetic ColorantWater, Cyclohexasiloxane, Butyloctyl Salicylate, Propanediol, Propylheptyl Caprylate, Isododecane, Caprylyl Methicone, Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone, Methyl Methacrylate Crosspolymer, Methyl Trimethicone, Disteardimonium Hectorite, Magnesium Sulfate, Triethoxycaprylylsilane, 1,2-Hexanediol, Polyglyceryl-2 Dipolyhydroxystearate, Polymethylsilsesquioxane, Lauryl Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone, Butylene Glycol, Betula Platyphylla Japonica Juice, Glyceryl Caprylate, Caprylyl Glycol, Ethylhexylglycerin, Artemisia Annua Extract, Anthemis Nobilis Flower Oil, Sodium Hyaluronate, Pinus Sylvestris Leaf Oil, Glycerin, Nelumbo Nucifera Leaf Extract, Cryptomeria Japonica Leaf Extract, Saccharomyces Ferment Filtrate, Tocopherol, Glyceryl Glucoside, Hyaluronic Acid, Ascorbic Acid, Zinc Oxide
Key Ingredients
Benefits
Ingredients Explained
Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.
So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterCyclohexasiloxane is a type of silicone more commonly known as D6. It is an emollient and solvent.
Cyclohexasiloxane is used to evenly distribute ingredients throughout the product. When applied to the skin, Cyclohexasiloxane evaporates and leaves behind a silky feel.
As an emollient, it can help the skin feel soft and hydrated. It is also used to reduce frizz in hair products.
Learn more about CyclohexasiloxaneButyloctyl Salicylate is similar to octisalate. It a photostabilizer, SPF booster, emollient and solvent. Its main purpose is to evenly spread out ingredients.
This ingredient is a common sunscreen ingredient carrier and photostabilizer. According to a manufacturer, it is suitable for carrying micro Titanium Dioxide, Zinc Oxide, and pigments.
Photostabilizers help stabilize UV-filters and prevents them from degrading quickly.
Due to regulation loopholes, this ingredient is not required to be labeled as an active chemical filter like other UV ingredients. This is why you'll likely find this ingredient in mineral sunscreens from the US.
According to EU regulation, this ingredient can cause harmful effects to aquatic life.
Learn more about Butyloctyl SalicylatePropanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.
It’s often used to:
Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.
Learn more about PropanediolWe don't have a description for Propylheptyl Caprylate yet.
Isododecane is a fragrance, emollient, and solvent.
As an emollient, it helps your skin stay soft and hydrated. Emollients help trap moisture into your skin.
Isododecane's role as a solvent makes it a great texture enhancer. It spreads smoothly on skin and does not leave a sticky feeling behind. Isododecane also helps prevent color transfer in makeup products.
Isododecane is not absorbed into skin.
Learn more about IsododecaneCaprylyl Methicone is a type of silicone.
It helps soften and soothe the skin by creating a thin film on top. This film helps trap moisture, keeping your skin hydrated.
Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone is a type of silicone.
This ingredient comes as a powder made up of small, porous, microbeads. It is used to add a silky feel to products and also helps absorb oil.
Methyl Trimethicone is a type of silicone. It is a solvent and emulsifier.
Solvents are used to keep ingredients together in a product. They can help dissolve ingredients to stable bases or help evenly distribute ingredients throughout the product.
Emulsifiers help stabilize a product. It does this by preventing certain ingredients from separating.
Methyl Trimethicone does not get absorbed into the skin.
Learn more about Methyl TrimethiconeDisteardimonium Hectorite comes from the clay mineral named hectorite. It is used to add thickness to a product.
It can also help stabilize a product by helping to disperse other ingredients.
Hectorite is a rare, white clay mineral.
Learn more about Disteardimonium HectoriteMagnesium Sulfate is a salt. It can be naturally found in sea water or mineral deposits.
In cosmetics, Magnesium Sulfate is used to thicken a product or help dilute other solids. It is a non-reactive and non-irritating ingredient.
You might recognize Magnesium Sulfate as epsom salt, or the bath salt used to help relieve muscle aches.
One study shows magnesium deficiency may lead to inflammation of the skin. Applying magnesium topically may help reduce inflammation.
Learn more about Magnesium SulfateTriethoxycaprylylsilane is a silicone used to bind and stabilize ingredients.
As an emulsifier, it helps prevent ingredients from separating. This can help elongate the shelf life of products.
Triethoxycaprylylsilane is often used to coat mineral sunscreens ingredients to help give a better feel. It also helps reduce oxidative stress in sunscreens.
Learn more about Triethoxycaprylylsilane1,2-Hexanediol is a synthetic liquid and another multi-functional powerhouse.
It is a:
- Humectant, drawing moisture into the skin
- Emollient, helping to soften skin
- Solvent, dispersing and stabilizing formulas
- Preservative booster, enhancing the antimicrobial activity of other preservatives
Polyglyceryl-2 Dipolyhydroxystearate isn't fungal acne safe.
Polymethylsilsesquioxane is a silicone used as a film forming agent.
When applied to the skin, this ingredient creates an invisible film on the surface. This film still allows oxygen to pass through, but prevents moisture from escaping. This can help condition and hydrate the skin. It also leaves a silky feel when applied.
Polymethylsilsesquioxane has not been shown to clog pores. It has been deemed safe to use up to 55%, but most cosmetics use much less.
If you have concerns about using this ingredient, we recommend speaking with a professional.
Learn more about PolymethylsilsesquioxaneLauryl Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone is a type of silicone.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
- It is a solvent, meaning that it helps to dissolve other ingredients. This also enhances the absorption of the product into one's skin.
- It is a humectant, which means that it helps attract moisture into the skin.
- It helps improve product application.
- It has mild preservative properties.
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Betula Platyphylla Japonica Juice is the sap of the Asian White Birch tree. Birch juice has antioxidant, hydrating, and soothing properties.
The high content of amino acids, sugars, and minerals provide the skin with moisture. On top of that, it contains Vitamins C and B (niacinamide). These two superstar ingredients protect your skin while reducing dark spots.
This white birch is currently being studied for potential anti-cancer properties. It has been used in traditional Asian medicine to help treat infections.
Learn more about Betula Platyphylla Japonica JuiceGlyceryl Caprylate comes from glycerin and caprylic acid, a fatty acid from coconut. It has emollient and emulsifier properties.
As an emollient, it helps hydrate your skin. Emollients work by creating a barrier on your skin to trap moisture in, helping to keep your skin soft and smooth.
On the other hand, emulsifiers prevent ingredients (such as oil and water) from separating.
Learn more about Glyceryl CaprylateCaprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
It is a common ingredient in many products, especially those designed to hydrate skin. The primary benefits are retaining moisture, skin softening, and promoting a healthy skin barrier.
Though Caprylyl Glycol is an alcohol derived from fatty acids, it is not the kind that can dry out skin.
This ingredient is also used as a preservative to extend the life of products. It has slight antimicrobial properties.
Learn more about Caprylyl GlycolEthylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.
You might see Ethylhexylglycerin often paired with other preservatives such as phenoxyethanol. Ethylhexylglycerin has been found to increase the effectiveness of these other preservatives.
Artemisia Annua Extract comes from a plant more commonly known as annual mugwort.
Mugwort contains flavonoids, a potent antioxidant. Ongoing studies are looking at its ability to increase wound-healing and soothe the skin.
This ingredient has been used in traditional Chinese medicine to help reduce fever.
Fun fact: Artemisia Annua Extract is used to treat Malaria due to its natural anti-malarial properties. The scientist who discovered this has been awarded a Nobel Prize in Medicine.
Learn more about Artemisia Annua ExtractThis oil is created by distilling the dried flower heads of the Roman Chamomile flower.
Chamomile is rich in antioxidants and has anti-inflammatory properties. Several compounds found in chamomile help with soothing, such as bisbolol.
Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.
Like hyaluronic acid, it is great at holding water and acts as a humectant. This makes it a great skin hydrating ingredient.
Sodium Hyaluronate is naturally occurring in our bodies and is mostly found in eye fluid and joints.
These are some other common types of Hyaluronic Acid:
Learn more about Sodium HyaluronatePinus Sylvestris Leaf Oil is an oil.
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.
As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.
Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.
Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.
In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.
This ingredient is organic, colorless, odorless, and non-toxic.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Learn more about GlycerinWe don't have a description for Nelumbo Nucifera Leaf Extract yet.
We don't have a description for Cryptomeria Japonica Leaf Extract yet.
Saccharomyces Ferment Filtrate is created from fermenting Saccharomyces, a yeast also known as baker's yeast or brewer's yeast.
As a humectant, Saccharomyces Ferment Filtrate helps draw moisture from the air to your skin to keep your skin hydrated. The humectant properties comes from its beta-glucan content.
Tocopherol (also known as Vitamin E) is a common antioxidant used to help protect the skin from free-radicals and strengthen the skin barrier. It's also fat soluble - this means our skin is great at absorbing it.
Vitamin E also helps keep your natural skin lipids healthy. Your lipid skin barrier naturally consists of lipids, ceramides, and fatty acids. Vitamin E offers extra protection for your skin’s lipid barrier, keeping your skin healthy and nourished.
Another benefit is a bit of UV protection. Vitamin E helps reduce the damage caused by UVB rays. (It should not replace your sunscreen). Combining it with Vitamin C can decrease sunburned cells and hyperpigmentation after UV exposure.
You might have noticed Vitamin E + C often paired together. This is because it is great at stabilizing Vitamin C. Using the two together helps increase the effectiveness of both ingredients.
There are often claims that Vitamin E can reduce/prevent scarring, but these claims haven't been confirmed by scientific research.
Learn more about TocopherolGlyceryl Glucoside is made from glycerol and glucose.
It is a humectant. Humectants help hydrate your skin by drawing moisture to it from the air.
Some foods that contain glyceryl glucoside include sake, miso, and wines.
Learn more about Glyceryl GlucosideHyaluronic acid is naturally found in healthy skin. It is a humectant, meaning it draws moisture to your skin.
This ingredient helps hydrate, soothe, and protect the skin.
What makes hyaluronic acid so hydrating? It has the capacity to bind or hold large amounts of water.
Fun fact: It is already naturally found in our bodies, such as the fluids of our eyes and our joints.
Studies find this ingredient to have anti-inflammatory and anti-microbial properties. This can help speed up wound-healing.
Hyaluronic acid can be irritating if the molecule has a low-molecular weight, or if the molecules are small.
One study found low-molecular weight hyaluronic acid to be pro-inflammatory, meaning some people may experience irritation. This is because our bodies use hyaluronic acid in the wound-healing process to signal to our bodies, via irritation, that something needs healing.
The same study found high-molecular weight hyaluronic acid to be anti-inflammatory.
These are some other common types of Hyaluronic Acid:
Learn more about Hyaluronic AcidAscorbic Acid is is pure Vitamin C. This form makes up the largest amount of vitamin C found naturally in our skin.
Not only is vitamin C great for your overall health and immune system, it also has plenty of benefits on your skin.
Vitamin C is best used for brightening skin. It improves dark spots, acne scars, and hyperpigmentation. This is because it blocks the process of skin darkening when exposed to UV.
Remember: Vitamin C should not replace sunscreen!
Your skin uses vitamin C to build collagen. Collagen is one key component in having a strong skin barrier and plump skin. Vitamin C also plays a role in regulating collagen, thus making it effective in improving wrinkles and fine lines.
Ascorbic acid shows potent antioxidant activity. As an antioxidant, it helps fight free-radicals. Free-radicals are molecules that may damage your skin cells. These antioxidants also protect skin against UV damage.
The best formulations include Vitamin E and/or ferulic acid. These two ingredients help stabilize and provide a boost in the benefits of ascorbic acid. This is because ascorbic acid becomes unstable when exposed to UV and air. In fact, you can tell your ascorbic acid has oxidized when it turns an orange-yellow color.
Ascorbic acid is generally compatible with other ingredients. However, using ascorbic acid with other active ingredients might cause irritation. Two ingredients: copper ions and benzoyl peroxide, will inactivate ascorbic acid completely.
Read more about other types of Vitamin C:
Foods rich with vitamin C include oranges, strawberries, broccoli, bell peppers, and more. When consuming Vitamin C, your skin receives a portion of the nutrients.
Learn more about Ascorbic AcidZinc Oxide is a mineral broad-spectrum UV filter; it is the broadest UVA and UVB reflector approved by the FDA. While it is most commonly man-made for cosmetics, it can naturally occur in zincite, a rare mineral.
Today, traditional and nano-sized zinc oxide can be found in beauty products. Nano-sized zinc oxide can enhance a product's UV protection. While it is not believed to have a negative effect on skin, nano-zinc oxide may be harmful to coral reefs - though the verdict is not entirely out on this one.
Zinc Oxide also has antibacterial and calming properties. It is not water soluble.
Zinc has been used throughout history as an ingredient in paint and medicine. An Indian text from 500BC is believed to list zinc oxide as a salve for open wound. The Ancient Greek physician Dioscorides has also mentioned the use of zinc as an ointment in 1AD.
Learn more about Zinc OxideReviews
No written reviews yet. Be the first to review this product.
Where it's from
Round Lab is a Korean brand
50 SPF Rating
With an SPF rating of 50, this product protects against 98.0% of UVB rays
Often compared with
We're dedicated to providing you with the most up-to-date and science-backed ingredient info out there.
The data we've presented on this page has been verified by a member of the SkinSort Team.
Read more about us· Updated February 27, 2025 • Added by anemone