COSRX Ultra-Light Invisible Sunscreen SPF 50 PA++++ Versus ERHA Perfect Shield Clearly Light Sunscreen SPF 50
Updated on July 12, 2025
Overview
What they are
These products are both sunscreens. They have a total of 4 ingredients in common
Cool Features
They both contain SPF and Vitamin E
Suited For
They're both likely to be good for dry skin, sensitive skin and scar healing
Free From
They both do not contain any harsh alcohols, common allergens, fragrances, oils, parabens or sulfates
What's Inside
They both contain 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
COSRX Ultra-Light Invisible Sunscreen SPF 50 PA++++ 28 ingredients
ERHA Perfect Shield Clearly Light Sunscreen SPF 50 35 ingredients
What's inside
What's inside
At a glance
Click on any of the items below to learn more
COSRX Ultra-Light Invisible Sunscreen SPF 50 PA++++ 28 ingredients
ERHA Perfect Shield Clearly Light Sunscreen SPF 50 35 ingredients
Key Ingredients
Benefits
Concerns
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.
Diethylamino Hydroxybenzoyl Hexyl Benzoate (DHHB) is a chemical UV-A 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.
Learn more about Diethylamino Hydroxybenzoyl Hexyl BenzoateEthylhexyl Triazone is a modern chemical sunscreen that protects from UV-B radiation.
It is the most effective of existing UV-B filters, as it provides the highest level of photo-stable absorption. It protects from the entire UV-B range (280 to 320nm), with it's highest level of protection at 314nm.
Ethylhexyl Triazone is oil soluble, oderless and colorless, which mean it is able to be incorporated into a variety of different formulations.
It is not currently available within the United States due to slow changing FDA regulations. Outside of the US, it is used in formulations at concentrations up to 5%.
Learn more about Ethylhexyl TriazoneEthylhexylglycerin (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.
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 WaterIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
COSRX Ultra-Light Invisible Sunscreen SPF 50 PA++++ 28 ingredients
ERHA Perfect Shield Clearly Light Sunscreen SPF 50 35 ingredients

Reviews
Here's what our community thinks
COSRX Ultra-Light Invisible Sunscreen SPF 50 PA++++ 28 ingredients
ERHA Perfect Shield Clearly Light Sunscreen SPF 50 35 ingredients
Be the first to review Perfect Shield Clearly Light Sunscreen SPF 50
Write the first review