Bliss Block Star Invisible Daily Sunscreen SPF 30 Versus SOS Serum SOS SPF 50
Updated on April 01, 2025
Overview
What they are
These products are both vegan and cruelty-free sunscreens. They have a total of 3 ingredients in common
Cool Features
They both contain hyaluronic acid
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin and scar healing
Free From
They both do not contain any parabens
What's Inside
They both contain common allergens, fragrances 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
Bliss Block Star Invisible Daily Sunscreen SPF 30 43 ingredients
SOS Serum SOS SPF 50 16 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
Bliss Block Star Invisible Daily Sunscreen SPF 30 43 ingredients
SOS Serum SOS SPF 50 16 ingredients
Benefits
Concerns
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.
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 WaterGlycerin 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 GlycerinDimethicone is a type of synthetic silicone created from natural materials such as quartz.
What it does:
Dimethicone comes in different viscosities:
Depending on the viscosity, dimethicone has different properties.
Ingredients lists don't always show which type is used, so we recommend reaching out to the brand if you have questions about the viscosity.
This ingredient is unlikely to cause irritation because it does not get absorbed into skin. However, people with silicone allergies should be careful about using this ingredient.
Note: Dimethicone may contribute to pilling. This is because it is not oil or water soluble, so pilling may occur when layered with products. When mixed with heavy oils in a formula, the outcome is also quite greasy.
Learn more about DimethiconeIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Bliss Block Star Invisible Daily Sunscreen SPF 30 43 ingredients
SOS Serum SOS SPF 50 16 ingredients

Reviews
Here's what our community thinks
Bliss Block Star Invisible Daily Sunscreen SPF 30 43 ingredients
SOS Serum SOS SPF 50 16 ingredients
Quite a moisturising SPF and works well as a makeup base. Hasn't pilled for me at all. The texture is similar to the Bondi Sands in the white tube but thicker. If your skin is prone to clogging I would be a little hesitant - although I can't say this has actively caused breakouts, it feels like it could contribute towards pore clogging you don't thoroughly clean/exfoliate your skin.
after trying so many spfs my long search for the perfect sunscreen is seemingly over, i can't stress enough how much i like this product.
it has a mousse-like texture that feels weightless when applied and it uses a mixture of chemical and physical spf filters, combined with hyaluronic acid for a bit of hydration. it has a lovely satin finish and doesnt pill when layered on top of other Show more