Versus

Allies of Skin Multi Hyaluronic Antioxidant Hydration Serum Versus PCA Skin Hyaluronic Acid Boosting Serum

Serum
Serum
American Brand United States
American Brand United States

Overview

What they are

These products are both cruelty-free and reef safe serums. They have a total of 8 ingredients in common

Cool Features

They both contain hyaluronic acid and niacinamide

Suited For

They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots

Free From

They both do not contain any harsh alcohols, parabens or sulfates

What's Inside

They both contain oils

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

Ingredients Side-by-side

found in both products
Multi Hyaluronic Antioxidant Hydration Serum

Water

Skin Conditioning

Triethyl Citrate

Masking
Fragrance Icon

Glycerin

Humectant
0 / 0 Helps hydrate Dry Skin IconHelps brighten skin Icon

Polysorbate 20

Emulsifying
0 / 0 Not safe for Fungal Acne Icon

Tocopheryl Acetate

Antioxidant
0 / 0 Vitamin E IconAntioxidant Icon

Superoxide Dismutase

Antioxidant
Antioxidant IconHelps with Anti-Aging Icon

Ethyl Macadamiate

Skin Conditioning
Not safe for Fungal Acne Icon

Cetearyl Alcohol

Emollient
2 / 1 Fatty Alcohol IconMay worsen Oily Skin IconBad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Bisabolol

Masking
Helps reduce irritation Icon

Helianthus Annuus Seed Oil

Emollient
0 / 0 Oil IconHelps hydrate Dry Skin IconNot safe for Fungal Acne Icon

C10-18 Triglycerides

Emollient
Not safe for Fungal Acne Icon

PPG-3 Benzyl Ether Myristate

Emollient

Dimethyl Isosorbide

Solvent

Pichia/Resveratrol Ferment Extract

Skin Conditioning

Niacinamide

Smoothing
Niacinamide IconGood for Oily Skin IconHelps reduce Skin Redness IconHelps reduce irritation IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Dark Spots IconGood for Scar Healing IconHelps fight Acne IconHelps brighten skin Icon

Sodium Hyaluronate

Humectant
0 / 0 Hyaluronic Acid Icon

Hyaluronic Acid

Humectant
Hyaluronic Acid IconHelps with Anti-Aging IconGood for Scar Healing IconHelps brighten skin Icon

Sodium Hyaluronate Crosspolymer-3

Humectant

Panthenol

Skin Conditioning
0 / 0 Helps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation Icon

Glycyrrhiza Glabra Root Extract

Bleaching
Good for Dark Spots Icon

Fragaria Vesca Fruit Extract

Astringent

Candelilla/Jojoba/Rice Bran Polyglyceryl-3 Esters

Emulsifying
Not safe for Fungal Acne Icon

Mel

Emollient

Phospholipids

Skin Conditioning

Cassia Angustifolia Seed Polysaccharide

Skin Conditioning

Adenosine

Skin Conditioning
Good for Minimizing Pores IconGood for Scar Healing Icon

Sphingolipids

Emollient

Epigallocatechin Gallate

Antioxidant
Antioxidant Icon

Astaxanthin

Skin Conditioning

Palmitoyl Tripeptide-38

Skin Conditioning
Peptide IconHelps with Anti-Aging IconNot safe for Fungal Acne Icon

Glyceryl Stearate

Emollient
1 / 0 Not safe for Fungal Acne Icon

Sclerotium Gum

Emulsion Stabilising

Ethylhexylglycerin

Skin Conditioning

Xanthan Gum

Emulsifying

Pelargonium Graveolens Flower Oil

Masking
Fragrance IconOil IconMay cause irritation IconEU Allergen Icon

Pelargonium Graveolens Oil

Masking
Fragrance IconOil Icon

Tocopherol

Antioxidant
0-3 / 0-3 Vitamin E IconAntioxidant IconHelps hydrate Dry Skin IconHelps with Anti-Aging IconGood for Scar Healing Icon

Ascorbic Acid

Antioxidant
Vitamin C IconAntioxidant IconHelps reduce Skin Redness IconGood for Skin Texture IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Dark Spots IconGood for Scar Healing IconHelps brighten skin Icon

Corn Starch Modified

Absorbent

Hydroxypropyl Cyclodextrin

Masking

O-Cymen-5-Ol

Antimicrobial
Preservative Icon

Sodium Gluconate

Skin Conditioning

Sodium Stearoyl Lactylate

Emulsifying

Sodium Polygamma-Glutamate

Emulsion Stabilising

Polysorbate 60

Emulsifying
Not safe for Fungal Acne Icon

Hydroxyethylcellulose

Emulsion Stabilising

Sorbic Acid

Preservative
Preservative Icon

Malic Acid

Buffering
AHA IconGood for Oily Skin IconHelps reduce Skin Redness IconGood for Skin Texture IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Dark Spots IconGood for Scar Healing IconHelps brighten skin IconMay worsen Rosacea Icon

Phenoxyethanol

Preservative
Preservative Icon

Citral

Perfuming
Fragrance IconMay cause irritation IconEU Allergen IconMay worsen Rosacea Icon

Limonene

Perfuming
Fragrance IconMay worsen Eczema IconMay worsen Rosacea Icon

Citronellol

Perfuming
Fragrance IconMay cause irritation IconEU Allergen Icon

Geraniol

Perfuming
Fragrance IconMay cause irritation IconEU Allergen Icon

Linalool

Perfuming
Fragrance IconMay cause irritation IconEU Allergen IconMay worsen Eczema IconMay worsen Rosacea Icon
Hyaluronic Acid Boosting Serum

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
Smoothing

Niacinamide has emerged as an all-star ingredient due to its many benefits.

It is known to treat acne by reducing inflammation. It also helps fade dark-spots and strengthen the skin by promoting the growth of the ceramide barrier.

Other benefits include smoothing wrinkles and minimizing redness.

The cherry on top? Niacinamide can also help build keratin, a protein that keeps skin firm.

When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.

Niacinamide can be mixed with other ingredients to boost benefits. For instance, it has shown to be effective when used with copper, folic acid, and zinc to treat acne.

Learn more about Niacinamide
Humectant, Skin Conditioning

Sodium 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 Hyaluronate
Humectant, Moisturising, Skin Conditioning

Hyaluronic acid is naturally found in healthy skin. It is a humectant, meaning it draws moisture to your skin.

This ingredient helps hydrate, soothe, and protect the skin.

What makes hyaluronic acid so hydrating? It has the capacity to bind or hold large amounts of water.

Fun fact: It is already naturally found in our bodies, such as the fluids of our eyes and our joints.

Studies find this ingredient to have anti-inflammatory and anti-microbial properties. This can help speed up wound-healing.

Hyaluronic acid can be irritating if the molecule has a low-molecular weight, or if the molecules are small.

One study found low-molecular weight hyaluronic acid to be pro-inflammatory, meaning some people may experience irritation. This is because our bodies use hyaluronic acid in the wound-healing process to signal to our bodies, via irritation, that something needs healing.

The same study found high-molecular weight hyaluronic acid to be anti-inflammatory.

These are some other common types of Hyaluronic Acid:

Learn more about Hyaluronic Acid
Skin Conditioning

Ethylhexylglycerin (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.

Emulsifying, Emulsion Stabilising, Gel Forming

Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.

On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.

Xanthan gum is a pretty common and great ingredient. It is a natural, non-toxic, non-irritating ingredient that is also commonly used in food products.

Learn more about Xanthan Gum
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.

When to use

12 Routines
58% use in am
42% use in pm
100% use every day
53 Routines
51% use in am
49% use in pm
96% use every day
When to use See routines that use it ->

Reviews

Here's what our community thinks

Allies of Skin Multi Hyaluronic Antioxidant Hydration Serum 54 ingredients

Multi Hyaluronic Antioxidant Hydration Serum hasn't been rated yet.
Rate it now

PCA Skin Hyaluronic Acid Boosting Serum 41 ingredients

5.0 /5
from 2 ratings
Absorbs Well (1) Hydrating (1) Works Well (1)
nataliehunter's avatar

Natalie Hunter

5 months ago
Review

Very hydrating

#hydrating
#absorbs well
#works well