Updated on October 18, 2023
Overview
What they are
These products are both reef safe serums. They have a total of 6 ingredients in common
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin, sensitive skin, scar healing and dark spots
Free From
They both do not contain any harsh alcohols, common allergens, oils, parabens 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
Paula's Choice Calm Repairing Serum 29 ingredients
SkinBetter Science Mystro Active Balance Serum 43 ingredients
At a glance
Click on any of the items below to learn more
Paula's Choice Calm Repairing Serum 29 ingredients
SkinBetter Science Mystro Active Balance Serum 43 ingredients
Benefits
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Notable Ingredients
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Concerns
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Ingredients Side-by-side
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.
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
4 Benefits May cause irritation
Hyaluronic acid is naturally found in healthy skin. It is a humectant, meaning it draws moisture to your skin.
Beta-Glucan is a polysaccharide. It can be derived from the cell walls of seaweed, oats, yeast, and fungi.
Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.
Cholesterol is a class of organic molecules called lipids. It helps hydrate your skin and is essential to having a healthy skin barrier.
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.
Phytosphingosine is a phospholipid naturally found in our skin. It helps moisturize, soothe, and protect skin.
Glycine Soja Seed Extract comes from the seed of the wild soybean plant. Wild soybean extract contains fatty acids (linoleic, oleic, linolenic), vitamin E, and antioxidants.
Helps with Anti-Aging
Ubiquinone (Coenzyme Q10) is a molecule already found in our bodies. It is a potent antioxidant and skin-soothing ingredient.
Caprylic/Capric Triglyceride is an emollient, solvent, and texture enhancer. It is considered a skin-softener by helping the skin prevent moisture loss.
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.
Carbomer is a polymer of acrylic acid. Its main role is to create gel consistency within products.
Polysorbate 20 is made by combining ethoxylation of sorbitan, ethylene oxide, and lauric acid. It is a mild cleansing agent, surfactant, and emulsifier.
Disodium EDTA plays a role in making products more stable by aiding other preservatives.
Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.
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.
Water, Glycerin, Hyaluronic Acid, Beta-Glucan, Sea Whip Extract, Sodium Hyaluronate, Ceramide NP, Ceramide AP, Ceramide EOP, Cholesterol, Glycyrrhiza Glabra Root Extract, Epilobium Angustifolium Extract, Phytosphingosine, Sodium Cocoyl Amino Acids, Chrysanthemum Parthenium Flower Extract, Glycine Soja Seed Extract, Ubiquinone, Sodium Lauroyl Lactylate, Caprylic/Capric Triglyceride, Magnesium Aspartate, Potassium Aspartate, Sarcosine, Xanthan Gum, Carbomer, Polysorbate 20, Peg/Ppg-14/4 Dimethicone, Disodium EDTA, Ethylhexylglycerin, Phenoxyethanol
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.
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Propanediol helps absorb ingredients into your skin, boosting their benefits. It can act as an emollient, making your skin softer. Propanediol can help products last longer by boosting the properties of preservatives within the formulation.
Polyglyceryl-3 Distearate isn't fungal acne safe.
Cetearyl Glucoside is a surfactant and emulsifier. It can be produced from synthetic of natural sources of cetearyl alcohol and glucose.
Squalane is an emollient that helps the skin hold onto moisture. It's an oily liquid that occurs naturally in certain types of fish and plant oils.
6 Benefits
Niacinamide has emerged as an all-star ingredient due to its many benefits.
Chamomilla Recutita Flower Extract comes from the Chamomile flower.
Curcuma Longa Root Extract is from the spice, turmeric. Besides being a healthy and delicious spice, turmeric also has plenty of skincare benefits. It has anti-inflammatory, antioxidant, and anti-microbial properties.
Astaxanthin is a carotene pigment and red pigment. It's what makes salmon a pink color.
Thioctic Acid is an enzyme and antioxidant. A more common name for this is Alpha Lipoic Acid.
Antioxidant 4 Benefits May cause irritation
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.
Caprylic/Capric Triglyceride is an emollient, solvent, and texture enhancer. It is considered a skin-softener by helping the skin prevent moisture loss.
Sodium Stearoyl Glutamate is an emulsifier and helps condition the skin. It is amino acid-based.
Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate (long name, huh?) is a synthetic antioxidant.
Glyceryl Stearate Citrate is a citric acid ester of glyceryl stearate.
Tribehenin comes from glycerin and behenic acid.
3 Concerns
Cetearyl alcohol is a mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is mainly used as an emulsifier. Emulsifiers help prevent the separation of oils and products. Due to its composition, it can also be used to thicken a product or help create foam.
Hydroxyethylcellulose is used to improve the texture of products. It is created from a chemical reaction involving ethylene oxide and alkali-cellulose. Cellulose is a sugar found in plant cell walls and help give plants structure.
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.
Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.
Phenethyl Alcohol is a colorless and aromatic alohol. It is naturally occuring in essential oils.
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.
4 Benefits 2 Concerns
Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
Helps brighten skin May worsen Rosacea
Phytic Acid is a gentle AHA and antioxidant. The chemical makeup makes it classified as an AHA, such as lactic acid.
Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.
Water, Copaifera Officinalis Resin, Glycerin, Butylene Glycol, Propanediol, Polyglyceryl-3 Distearate, Isosorbide Dicaprylate, Cetearyl Glucoside, Ethoxydiglycol, Diheptyl Succinate, Squalane, Niacinamide, Panax Notoginseng Root Extract, Theobroma Cacao Leaf Cell Extract, Chamomilla Recutita Flower Extract, Magnolia Officinalis Bark Extract, Echinacea Purpurea Extract, Sophora Japonica Bud Extract, Humulus Lupulus Extract, Curcuma Longa Root Extract, Hydrolyzed Sodium Hyaluronate, Haematococcus Pluvialis Extract, Astaxanthin, Ergothioneine, Thioctic Acid, Sorbitan Olivate, Tocopherol, Caprylic/Capric Triglyceride, Capryloyl Glycerin/Sebacic Acid Copolymer, Sodium Stearoyl Glutamate, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Glyceryl Stearate Citrate, Tribehenin, Cetearyl Alcohol, Acacia Senegal Gum, Hydroxyethylcellulose, Xanthan Gum, Ethylhexylglycerin, Phenethyl Alcohol, Phenoxyethanol, Citric Acid, Phytic Acid, Sodium Hydroxide
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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 WaterGlycerin 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 GlycerinCaprylic/Capric Triglyceride is an emollient, solvent, and texture enhancer. It is considered a skin-softener by helping the skin prevent moisture loss.
Within a product, Caprylic Triglyceride can thicken the product and make spreadability easier by dissolving clumping compounds. An added benefit of Caprylic Triglyceride is its antioxidant properties.
Caprylic Triglyceride is made by combining glycerin with coconut oil, forming a clear liquid. Caprylic Triglyceride has not been found to be toxic for human use in concentrations under 50%.
While there is an assumption Caprylic Triglyceride can clog pores due to it being derived from coconut oil, there is no research supporting this.
Learn more about Caprylic/Capric TriglycerideXanthan 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 GumEthylhexylglycerin (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.
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.
Ingredient Ratings
Here's what our community thinks of the ingredients in these two products.
When to use
Paula's Choice Calm Repairing Serum 29 ingredients
SkinBetter Science Mystro Active Balance Serum 43 ingredients
Reviews
Here's what our community thinks
Paula's Choice Calm Repairing Serum 29 ingredients
SkinBetter Science Mystro Active Balance Serum 43 ingredients
AideeCantu
Super expensive and I’m not sure I saw much of a difference. It helped a little bit with my redness but that’s all I noticed. It’s also hard to...
Super expensive and I’m not sure I saw much of a difference. It helped a little bit with my redness but that’s all I noticed. It’s also hard to spread around the face.
