Kosé Suncut UV Perfect Milk Super Waterproof SPF 50+ PA++++ Versus Round Lab Birch Moisturizing Sunscreen SPF 50+ PA++++
Updated on July 14, 2024
Overview
What they are
These products are both sunscreens. They have a total of 7 ingredients in common
Cool Features
They both contain hyaluronic acid, SPF and Vitamin E
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin and scar healing
Free From
They both do not contain any common allergens, parabens or sulfates
What's Inside
They both contain harsh alcohols, fragrances, oils and silicones
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
Kosé Suncut UV Perfect Milk Super Waterproof SPF 50+ PA++++ 33 ingredients
Round Lab Birch Moisturizing Sunscreen SPF 50+ PA++++ 40 ingredients
At a glance
Click on any of the items below to learn more
Kosé Suncut UV Perfect Milk Super Waterproof SPF 50+ PA++++ 33 ingredients
Round Lab Birch Moisturizing Sunscreen SPF 50+ PA++++ 40 ingredients
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Ingredients Side-by-side
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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 WaterPolymethylsilsesquioxane 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 PolymethylsilsesquioxaneDiethylamino Hydroxybenzoyl Hexyl Benzoate (DHHB) is a chemical UVA absorber. It is formulated for high UVA protection (320-400 nm).
DHHB is well-liked for:
DHHB has been approved by the EU, Japan, Taiwan, and South America for use up to 10%. Unfortunately, it has not been approved for use in the US or Canada due to slow regulatory processes.
This ingredient is soluble in oils, fats, and lipids.
It is an UV absorber. UV absorbers are an agent that absorbs UV rays to protect your skin. They use chemical reactions to convert UV rays into heat and energy.
Learn more about Diethylamino Hydroxybenzoyl Hexyl BenzoateButylene 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.
Overall, Butylene Glycol is a safe and well-rounded ingredient. It is unlikely to irritate skin, and works well with pretty much all other ingredients.
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 TocopherolSodium 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 HyaluronateThis oil is the the volatile oil distilled from 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.
Ingredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Kosé Suncut UV Perfect Milk Super Waterproof SPF 50+ PA++++ 33 ingredients
Round Lab Birch Moisturizing Sunscreen SPF 50+ PA++++ 40 ingredients
![](https://skinsort.com/assets/routine_creator/when_to_use_card-684ec64d.webp)
Reviews
Here's what our community thinks
Kosé Suncut UV Perfect Milk Super Waterproof SPF 50+ PA++++ 33 ingredients
Round Lab Birch Moisturizing Sunscreen SPF 50+ PA++++ 40 ingredients
Alllisda_idiot
It's not the most hydrating sunscreen I've ever used and its texture is reminiscent of a slightly thick serum or an emulsion. It feels good on my...
It's not the most hydrating sunscreen I've ever used and its texture is reminiscent of a slightly thick serum or an emulsion. It feels good on my skin and did not break me out. No white cast whatsoever, didn't require any blending in, and applied without a tacky finish. One of the sunscreens with the least pilling I've tried, but did very very very slightly pill on the area around the eyes after a long day and some instances of aggressive rubbing. Slightly less glowy and lighter than the BOJ sunscreen.
Lapaki
This reef-safe chemical sunscreen stands out with its naturally glowy and non-greasy finish. It has the texture of a medium moist cream, spreads...
This reef-safe chemical sunscreen stands out with its naturally glowy and non-greasy finish. It has the texture of a medium moist cream, spreads nicely and dries quickly in just a few minutes, making it easy to apply. It leaves no greasy or sticky residue, and there's no white cast or pilling to worry about. Notably, this sunscreen is highly moisturizing and can effectively replace the need for an additional moisturizer. It's my favourite one during the winter moths. However, I find it bit too moisturizing during the summer. Overall, it is an excellent choice for those looking for moisturizing sun protection without the drawbacks of a heavy or greasy sunscreen.