Versus

ZO Skin Health Illuminating Aox Serum Versus SkinBetter Science Alto Defense Serum

Serum
Serum
American Brand United States
American Brand United States

Overview

What they are

These products are both reef safe serums. They have a total of 10 ingredients in common

Cool Features

They both contain Vitamin C and Vitamin E

Suited For

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

Free From

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

What's inside (and what isn't)

What's inside (and what isn't)

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
Illuminating Aox Serum

Water

Skin Conditioning

Coconut Alkanes

Emollient
Not safe for Fungal Acne Icon

Methylheptyl Isostearate

Skin Conditioning

Cetyl Alcohol

Emollient
2 / 2 Fatty Alcohol Icon

Glyceryl Stearate

Emollient
1 / 0 Not safe for Fungal Acne Icon

PEG-100 Stearate

0 / 0 Not safe for Fungal Acne Icon

Isohexadecane

Emollient

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Carthamus Tinctorius Seed Oil

Masking
0-2 / 0 Oil IconHelps hydrate Dry Skin IconNot safe for Fungal Acne Icon

Squalane

Emollient
1 / 0 Helps hydrate Dry Skin Icon

Simmondsia Chinensis Seed Oil

Emollient
0-2 / 0 Oil IconHelps hydrate Dry Skin IconGood for Scar Healing IconNot safe for Fungal Acne Icon

Aleurites Moluccanus Seed Oil

Skin Conditioning
Oil IconNot safe for Fungal Acne Icon

Plukenetia Volubilis Seed Oil

Emollient
Oil IconNot safe for Fungal Acne Icon

Helianthus Annuus Seed Oil

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

Rosa Canina Fruit Extract

Astringent
Helps hydrate Dry Skin IconGood for Dark Spots IconGood for Scar Healing Icon

Rosmarinus Officinalis Leaf Extract

Antimicrobial

Leontopodium Alpinum Meristem Cell Culture

Skin Conditioning

Marrubium Vulgare Meristem Cell Culture

Skin Protecting

Polymethyl Methacrylate

Glycerin

Humectant
0 / 0 Helps hydrate Dry Skin IconGood for Scar Healing IconHelps brighten skin Icon

Coco-Caprylate/Caprate

Emollient
Not safe for Fungal Acne Icon

Glycol Distearate

Emollient
Not safe for Fungal Acne Icon

Polyacrylamide

Oleth-20

Cleansing
0 / 0

C13-14 Isoparaffin

Emollient
May worsen Oily Skin IconNot safe for Fungal Acne Icon

Caprylyl Glycol

Emollient

Salicyloyl Phytosphingosine

Skin Conditioning

Glycol Stearate

Emollient
0 / 0 Not safe for Fungal Acne Icon

Xanthan Gum

Emulsifying

Tocopheryl Acetate

Antioxidant
0 / 0 Vitamin E IconAntioxidant Icon

Propanediol

Solvent
Helps hydrate Dry Skin Icon

Caesalpinia Spinosa Gum

Skin Conditioning

Laureth-7

Emulsifying

Disodium EDTA

Ethyl Ferulate

Antioxidant
Antioxidant Icon

Myristyl Alcohol

Emollient
2 / 4 Fatty Alcohol Icon

Stearyl Alcohol

Emollient
2 / 2 Fatty Alcohol Icon

Aminomethyl Propanol

Buffering

Phospholipids

Skin Conditioning
Helps hydrate Dry Skin Icon

Sodium Hyaluronate

Humectant
0 / 0 Hyaluronic Acid IconHelps hydrate Dry Skin Icon

Isostearic Acid

Cleansing
Bad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Retinyl Palmitate

Skin Conditioning
1-3 / 1-3 Retinoid IconGood for Oily Skin IconGood for Skin Texture IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Dark Spots IconGood for Scar Healing IconHelps fight Acne IconHelps brighten skin IconNot safe for Fungal Acne IconMay worsen Rosacea 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

Methylene Glycol

Antimicrobial

C12-18 Fatty Acids Methyl Esters

Perfuming
Fragrance Icon

Lauryl Alcohol

Emollient
Fatty Alcohol Icon

Lecithin

Emollient
Helps hydrate Dry Skin Icon

Tocopherol

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

Phenoxyethanol

Preservative
Preservative Icon

Chlorphenesin

Antimicrobial
Preservative Icon

Glyceryl Caprylate

Emollient

Glyceryl Undecylenate

Emollient
Helps hydrate Dry Skin IconNot safe for Fungal Acne Icon

Parfum

Masking
Fragrance IconMay worsen Eczema IconMay worsen Rosacea Icon
Alto Defense Serum

Water

Skin Conditioning

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Propanediol

Solvent
Helps hydrate Dry Skin Icon

Ethylhexyl Olivate

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

Chlorogenic Acids

Antioxidant
Antioxidant Icon

Hydrolyzed Sodium Hyaluronate

Skin Conditioning
Helps hydrate Dry Skin IconHelps reduce irritation IconGood for Scar Healing Icon

Lauryl Lactate

Emollient

Dimethyl Isosorbide

Solvent

Glycyrrhiza Glabra Root Extract

Bleaching
Helps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation IconGood for Dark Spots Icon

Tetrahexyldecyl Ascorbate

Antioxidant
Vitamin C IconAntioxidant IconHelps reduce Skin Redness IconGood for Skin Texture IconGood for Minimizing Pores IconHelps brighten skin Icon

Ergothioneine

Antioxidant
Antioxidant IconHelps reduce irritation IconGood for Dark Spots Icon

Benzylidene Dimethoxydimethylindanone

Skin Protecting

Arabidopsis Thaliana Extract

Antioxidant
Antioxidant Icon

Carnosine

Skin Conditioning
Helps with Anti-Aging IconGood for Scar Healing Icon

Camellia Sinensis Leaf Extract

Antimicrobial
Antioxidant IconHelps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation IconGood for Minimizing Pores IconHelps with Anti-Aging Icon

Vitis Vinifera Seed Extract

Antimicrobial
Antioxidant IconHelps reduce Skin Redness IconHelps reduce irritation Icon

Theobroma Cacao Seed Extract

Antioxidant
Antioxidant Icon

Curcuma Longa Root Extract

Masking
Fragrance Icon

Olea Europaea Fruit Extract

Bleaching

Euterpe Oleracea Fruit Extract

Helps reduce irritation Icon

Trifluoroacetyl Tripeptide-2

Skin Conditioning
Peptide Icon

Buddleja Officinalis Flower Extract

UV Filter

Coffea Arabica Leaf Cell Extract

Antioxidant
Antioxidant Icon

Crocus Sativus Leaf Cell Culture Extract

Skin Protecting

Superoxide Dismutase

Antioxidant
Antioxidant IconHelps with Anti-Aging Icon

Ubiquinone

Antioxidant
Antioxidant IconHelps with Anti-Aging IconGood for Dark Spots Icon

Zingiber Officinale Root Extract

Masking
Helps reduce irritation IconGood for Scar Healing Icon

Ceramide NP

Skin Conditioning
Ceramide IconHelps hydrate Dry Skin IconHelps reduce irritation IconHelps with Anti-Aging Icon

Ceramide AP

Skin Conditioning
Ceramide IconHelps hydrate Dry Skin IconHelps reduce irritation IconHelps with Anti-Aging Icon

Ceramide EOP

Skin Conditioning
Ceramide IconHelps hydrate Dry Skin IconHelps reduce irritation IconHelps with Anti-Aging Icon

Linoleic Acid

Cleansing
Helps hydrate Dry Skin IconHelps reduce irritation IconGood for Dark Spots IconGood for Scar Healing IconHelps fight Acne IconMay worsen Oily Skin IconBad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Linolenic Acid

Cleansing
Fragrance IconHelps hydrate Dry Skin IconHelps reduce irritation IconGood for Dark Spots IconNot safe for Fungal Acne Icon

Sea Whip Extract

Skin Conditioning

Bisabolol

Masking
Helps reduce Skin Redness IconHelps reduce irritation IconGood for Dark Spots Icon

Tocopherol

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

Tocopheryl Acetate

Antioxidant
0 / 0 Vitamin E IconAntioxidant Icon

Cholesterol

Emollient
0 / 0 Helps hydrate Dry Skin Icon

Phytosphingosine

Skin Conditioning
Helps hydrate Dry Skin IconHelps reduce irritation Icon

Jojoba Esters

Emollient
Not safe for Fungal Acne Icon

Sodium PCA

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

Pentylene Glycol

Skin Conditioning

Methyl Gluceth-20

Humectant
Helps hydrate Dry Skin Icon

Glycerin

Humectant
0 / 0 Helps hydrate Dry Skin IconGood for Scar Healing IconHelps brighten skin Icon

Helianthus Annuus Seed Wax

Skin Conditioning
Not safe for Fungal Acne Icon

Acacia Decurrens Flower Wax

Emollient
Not safe for Fungal Acne Icon

Lecithin

Emollient
Helps hydrate Dry Skin Icon

Sodium Lauroyl Lactylate

Emulsifying

Dicetyl Phosphate

Emulsifying

Propanediol Dicaprylate/Caprate

Emollient

Polyglycerin-3

Humectant
Helps hydrate Dry Skin Icon

Ceteth-20 Phosphate

Cleansing

Diisostearyl Malate

Emollient

Xanthan Gum

Emulsifying

Steareth-2

Emulsifying
2 / 2

Acacia Senegal Gum

Masking

Carbomer

Emulsion Stabilising
1 / 0

Acrylates/C10-30 Alkyl Acrylate Crosspolymer

Emulsion Stabilising

Dextran

Helps hydrate Dry Skin Icon

Sodium Hydroxide

Buffering

Citric Acid

Buffering
AHA IconGood for Oily Skin IconGood for Skin Texture IconGood for Minimizing Pores IconGood for Scar Healing IconHelps brighten skin IconMay worsen Rosacea Icon

Disodium EDTA

Ethylhexylglycerin

Skin Conditioning

Phenoxyethanol

Preservative
Preservative Icon

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, Masking, Skin Conditioning

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.

Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.

Learn more about Butylene Glycol
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
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
Antioxidant, Skin Conditioning

Tocopheryl Acetate is AKA Vitamin E. It is an antioxidant and protects your skin from free radicals. Free radicals damage the skin by breaking down collagen.

One study found using Tocopheryl Acetate with Vitamin C decreased the number of sunburned cells.

Tocopheryl Acetate is commonly found in both skincare and dietary supplements.

Learn more about Tocopheryl Acetate
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

Disodium EDTA plays a role in making products more stable by aiding other preservatives.

It is a chelating agent, meaning it neutralizes metal ions that may be found in a product.

Disodium EDTA is a salt of edetic acid and is found to be safe in cosmetic ingredients.

Learn more about Disodium EDTA
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
Antioxidant, Masking, Skin Conditioning

Tocopherol (also known as Vitamin E) is a common antioxidant used to help protect the skin from free-radicals and strengthen the skin barrier. It's also fat soluble - this means our skin is great at absorbing it.

Vitamin E also helps keep your natural skin lipids healthy. Your lipid skin barrier naturally consists of lipids, ceramides, and fatty acids. Vitamin E offers extra protection for your skin’s lipid barrier, keeping your skin healthy and nourished.

Another benefit is a bit of UV protection. Vitamin E helps reduce the damage caused by UVB rays. (It should not replace your sunscreen). Combining it with Vitamin C can decrease sunburned cells and hyperpigmentation after UV exposure.

You might have noticed Vitamin E + C often paired together. This is because it is great at stabilizing Vitamin C. Using the two together helps increase the effectiveness of both ingredients.

There are often claims that Vitamin E can reduce/prevent scarring, but these claims haven't been confirmed by scientific research.

Learn more about Tocopherol
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

22 Routines
100% use in am
0% use in pm
100% use every day
21 Routines
71% use in am
29% use in pm
100% use every day