Versus

Kosas Revealer Skin-Improving Foundation SPF 25 - Very Light Neutral 100 Versus Laura Mercier Flawless Fusion Ultra-Longwear Foundation - 2W2 Butterscotch

Foundation
Foundation
American Brand United States
French Brand France

Updated on January 17, 2025

Overview

What they are

These products are both foundations. They have a total of 3 ingredients in common

Cool Features

They both contain Vitamin E

Suited For

They're both likely to be good for dry skin and brightening skin

Free From

They both do not contain any common allergens, oils, parabens or sulfates

What's Inside

They both contain fragrances

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

Click any item below to learn more and see relevant ingredients

About this product

About this product

At a glance

Click on any of the items below to learn more

Key Ingredients

Benefits

Concerns

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

found in both products
Revealer Skin-Improving Foundation SPF 25

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Skin Conditioning, Solvent

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 Water
Humectant, Skin Conditioning, Skin Protecting

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 Glycerin
Emollient, Emulsifying, Skin Conditioning

Lecithin is a term for a group of substances found in the cell membranes of plants, animals, and humans. They are made up of mixture of phospholipids.

This ingredient has emollient and emulsifying properties.

As an emollient, lecithen helps soften the skin and creates a barrier to keep moisture in.

As an emulsifier, it also helps prevent water and oil ingredients from separating. Lecithin can also help ingredients be better absorbed by the skin.

This is because the phospholipids in lecithin produce liposomes. Liposomes help other ingredients get through the skin barrier.

Depending on the source of this ingredient, lecithin may not be fungal acne safe. This is because some sources of lecithin come from soybean oil, which may feed the malassezia yeast that feeds fungal acne.

We recommend reaching out to the brand you are purchasing from to inquire about the source of their lecithin.

Learn more about Lecithin

When to use

27 Routines
93% use in am
7% use in pm
93% use every day
When to use See routines that use it ->
2 Routines
100% use in am
0% use in pm
50% use every day

Reviews

Here's what our community thinks

Kosas Revealer Skin-Improving Foundation SPF 25 35 ingredients

Revealer Skin-Improving Foundation SPF 25 hasn't been rated yet.
Rate it now

Laura Mercier Flawless Fusion Ultra-Longwear Foundation 27 ingredients

5.0 /5
from 1 rating
Buildable (1) Long Lasting (1) Medium Coverage (1)
SKINBYRH's avatar

SKINBYRH

10 months ago
Review

Lovely sheer coverage, not thick or heavy like alot of FA-safe foundations. Natural finish, not too matte or dewy. Doesn’t dry out skin if you prep well… really like this foundation

#long-lasting
#medium coverage
#natural
#buildable