Versus

Biossance Squalane + Firm And Lift Dual Serum Versus Prequel Multi-Quench Plumping Hydration Serum

Serum
Serum
American Brand United States
American Brand United States

Updated on January 13, 2025

Overview

What they are

These products are both vegan, cruelty-free, and reef safe serums. They have a total of 6 ingredients in common

Suited For

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

Free From

They both do not contain any harsh alcohols, common allergens, fragrances, parabens, silicones or sulfates

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

Benefits

Key Ingredients

Benefits

Ingredients Side-by-side

found in both products

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
Skin Conditioning

Ectoin is a compound found naturally in some species of bacteria. It can be synthetically created for skincare use.

This ingredient is an osmolyte; Osmolytes help organisms survive osmotic shock (it protects them from extreme conditions). It does this by influencing the properties of biological fluids within cells.

When applied to the skin, ectoin helps bind water molecules to protect our skin. The water forms a sort of armor for the parts of our skin cells, enzymes, proteins, and more.

Besides this, ectoin has many uses in skincare:

A study from 2004 found ectoin to counteract the damage from UV-A exposure at different cell levels. It has also been shown to protect skin against both UV-A, UV-B rays, infrared light, and visible light.

Studies show ectoin to have dual-action pollution protection: first, it protects our skin from further pollution damage. Second, it helps repair damage from pollution.

In fact, ectoin has been shown to help with:

Fun fact: In the EU, ectoin is used in inhalation medication as an anti-pollution ingredient.

Ectoin is a highly stable ingredient. It has a wide pH range of 1-9. Light, oxygen, and temperature do not affect this ingredient.

Learn more about Ectoin
Preservative

Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.

It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.

Solvent

Propanediol 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 Propanediol
Buffering, Masking

Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).

As an AHA, Citric Acid removes the top layer of skin cells from the newer layer of skin underneath. This helps skin to remove dark spots and even out skin tone.

If you spot Citric Acid near the end of an ingredient list, it's likely there as a pH adjuster rather than an active ingredient.

Read more about some other popular AHA's here:

Learn more about Citric Acid

When to use

6 Routines
83% use in am
17% use in pm
100% use every day
255 Routines
51% use in am
49% use in pm
94% use every day
When to use See routines that use it ->

Reviews

Here's what our community thinks

Biossance Squalane + Firm And Lift Dual Serum 17 ingredients

Squalane + Firm And Lift Dual Serum hasn't been rated yet.
Rate it now

Prequel Multi-Quench Plumping Hydration Serum 18 ingredients

5.0 /5
from 3 ratings
Light (3) Hydrating (3) Works Well (3)
alyssaklein's avatar

Alyssa Klein

6 months ago
Review

Comparing this to experiments super saturated, it comes in a larger bottle made of glass. But they are very similar! I like how Prequel shares the pH level.

#great value
#hydrating
#light
#absorbs well
rachleaves's avatar

rachleaves

4 months ago
Review

This appears to be the only moisturizer I can use that doesn't break me out or inflame me. I am still a tiny bit dry but that is to be expected without any emollients and I am not going to rock the boat and add anything at this moment. I avoid ingredients in almost everything marketed toward "sensitive skin" including niacinamide and hyaluronic acid, so I was thrilled to find this one.

#hydrating
#light
#absorbs well
#no scent