Versus

Carrot & Stick The Repair 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 11 ingredients in common

Cool Features

They both contain peptides

Suited For

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

Free From

They both do not contain any harsh alcohols, common allergens, oils, 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

Key Ingredients

Benefits

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

found in both products
The Repair Serum

Water

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

Glycerin

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

Acacia Senegal Gum

Masking

Hydrolyzed Rhizobian Gum

Camellia Sinensis Leaf Extract

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

Chamomilla Recutita Flower Extract

Masking
Helps reduce Skin Redness IconHelps reduce irritation Icon

PCA

Humectant

Sodium PCA

Humectant
0 / 0

Sh-Oligopeptide-1

Skin Conditioning
Peptide IconHelps with Anti-Aging IconGood for Scar Healing Icon

Sh-Oligopeptide-2

Skin Conditioning
Peptide Icon

Sh-Polypeptide-1

Skin Conditioning
Peptide Icon

Sh-Polypeptide-11

Peptide Icon

Sh-Polypeptide-9

Skin Conditioning
Peptide Icon

Sodium Hyaluronate

Humectant
0 / 0 Hyaluronic Acid Icon

Acetyl Hexapeptide-8

Humectant
Peptide IconHelps with Anti-Aging Icon

Arginine

Masking
Good for Scar Healing IconNot safe for Fungal Acne Icon

Aspartic Acid

Masking

Acetyl Glutamine

Skin Conditioning

Lecithin

Emollient

Carnitine

Cleansing

Alanine

Masking

Glycine

Buffering
Helps hydrate Dry Skin Icon

Histidine

Humectant

Isoleucine

Skin Conditioning

Phenylalanine

Masking

Proline

Skin Conditioning

Serine

Masking

Threonine

Valine

Masking

Caffeine

Skin Conditioning

Ruscus Aculeatus Root Extract

Astringent

Chenopodium Quinoa Seed Extract

Skin Conditioning

Bacillus

Skin Conditioning

Citrus Reticulata Peel Extract

Skin Conditioning

Codonopsis Lanceolata Extract

Antioxidant
Antioxidant Icon

Coix Lacryma-Jobi Ma-Yuen Seed Extract

Skin Conditioning

Chrysanthemum Parthenium Extract

Skin Conditioning

Digitaria Ciliaris Flower Extract

Emollient

Glycyrrhiza Glabra Root Extract

Bleaching
Good for Dark Spots Icon

Nelumbo Nucifera Seed Extract

Antimicrobial
Antioxidant Icon

Paeonia Suffruticosa Bark Extract

Skin Conditioning

Paeonia Albiflora Flower Extract

Tonic

Polygonum Odoratum Extract

Skin Conditioning

Sodium Lactate

Buffering

Polyglutamic Acid

Skin Conditioning
Helps hydrate Dry Skin IconGood for Scar Healing Icon

Xanthan Gum

Emulsifying

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

1,2-Hexanediol

Skin Conditioning

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

Caprylyl Glycol

Emollient

Sodium Benzoate

Masking
Preservative Icon

Sodium Levulinate

Skin Conditioning

Potassium Sorbate

Preservative
Preservative Icon

Phenoxyethanol

Preservative
Preservative Icon
Alto Defense Serum

Water

Skin Conditioning

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Propanediol

Solvent

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

Lauryl Lactate

Emollient

Dimethyl Isosorbide

Solvent

Glycyrrhiza Glabra Root Extract

Bleaching
Good 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 Icon

Benzylidene Dimethoxydimethylindanone

Skin Protecting

Arabidopsis Thaliana Extract

Antioxidant
Antioxidant Icon

Carnosine

Skin Conditioning

Camellia Sinensis Leaf Extract

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

Vitis Vinifera Seed Extract

Antimicrobial
Antioxidant Icon

Theobroma Cacao Seed Extract

Antioxidant
Antioxidant Icon

Curcuma Longa Root Extract

Masking
Fragrance Icon

Olea Europaea Fruit Extract

Bleaching

Euterpe Oleracea Fruit Extract

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

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 IconMay worsen Oily Skin IconBad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Linolenic Acid

Cleansing
Fragrance IconNot safe for Fungal Acne Icon

Sea Whip Extract

Skin Conditioning

Bisabolol

Masking
Helps reduce irritation 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

Pentylene Glycol

Skin Conditioning

Methyl Gluceth-20

Humectant

Glycerin

Humectant
0 / 0 Helps hydrate Dry Skin 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

Sodium Lauroyl Lactylate

Emulsifying

Dicetyl Phosphate

Emulsifying

Propanediol Dicaprylate/Caprate

Emollient

Polyglycerin-3

Humectant

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

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, 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

Acacia Senegal Gum has skin soothing, thickening, and formulation stabilizing properties. It comes from the Acacia tree that is native to sub-Saharan Africa.

Antimicrobial, Antioxidant, Astringent

Camellia Sinensis Leaf Extract is derived from the leaves of the tea plant. Black tea, green tea, and oolong tea are all harvested from this plant.

This ingredient has many skin benefits:

This ingredient contains polyphenols, a strong antioxidant. Antioxidants help fight off molecules that damage skin cells.

On top of that, the antioxidants in green tea neutralize free-radicals from the sun. This gives the skin some extra UV protection, but should not replace sunscreen.

Many components of tea have anti-inflammatory properties.

Polyphenols and L-theanine help soothe the skin and reduce irritation. The caffeine in Camellia Sinensis Leaf Extract helps calm inflamed blood vessels.

Other compounds found in tea include: Vitamin Bs, linoleic acid, magnesium, calcium, iron, and zinc.

Research has shown both drinking Camellia Sinensis Leaf Tea and applying it to the skin can help boost skin elasticity and hydration. Studies also show using tea extract may reduce sebum, or oil, production.

Learn more about Camellia Sinensis Leaf Extract
Humectant, Skin Conditioning

Sodium PCA is the sodium salt of pyroglutamic acid. It is naturally occurring in our skin's natural moisturizing factors where it works to maintain hydration.

The PCA stands for pyrrolidone carboxylic acid, a natural amino acid derivative.

This ingredient has skin conditioning, anti-inflammatory, and humectant properties. Humectants help hydrate your skin by drawing moisture from the air. This helps keep your skin moisturized.

Learn more about Sodium PCA
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
Bleaching, Emollient, Skin Conditioning

Glycyrrhiza Glabra Root Extract is an extract of the roots of Licorice. It has been found to have several benefits such as skin hydrating, conditioning, and soothing.

One component, glabridin, has extra potent antioxidant and soothing properties. It has also been found to block pigmentation from UVB rays in guinea pigs.

Licorice Root also contains a flavonoid. Flavonoids are a natural substance from in plants. Flavonoids also have antioxidant properties.

Another component, glycyrrhizin, has been found to have anti-inflammatory and antimicrobial benefits. This may make licorice root extract effective at treating acne. However, more research is needed to support this.

Liquiritin is one of the flavone compounds found in licorice. It has been found to help lighten skin by preventing tyrosinase from reacting with tyrosine. When the two react, protein is converted to melanin. Melanin is the substance in your body that gives your features pigmentation.

Learn more about Glycyrrhiza Glabra Root Extract
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
Humectant, Masking, Skin Conditioning

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

  • It is a solvent, meaning that it helps to dissolve other ingredients. This also enhances the absorption of the product into one's skin.
  • It is a humectant, which means that it helps attract moisture into the skin.
  • It helps improve product application.
  • It has mild preservative properties.

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

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
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

1 Routine
100% use in am
0% use in pm
100% use every day
20 Routines
70% use in am
30% use in pm
100% use every day