What's inside
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningGlycerin
HumectantButylene Glycol
HumectantPropanediol
SolventMethyl Gluceth-20
HumectantPEG-75
HumectantSerine
MaskingBetaine
HumectantSodium Citrate
BufferingDipotassium Glycyrrhizate
HumectantPEG-50 Hydrogenated Castor Oil Triisostearate
EmulsifyingPhytosteryl/Octyldodecyl Lauroyl Glutamate
Skin ConditioningPhenoxyethanol
PreservativeArginine
MaskingCitric Acid
BufferingPEG-60 Hydrogenated Castor Oil
EmulsifyingTocopherol
AntioxidantSodium PCA
HumectantAlanine
MaskingLysine Hcl
Skin ConditioningPCA Ethyl Cocoyl Arginate
MoisturisingGlycine
BufferingCeteth-20
CleansingThreonine
Valine
MaskingHistidine
HumectantProline
Skin ConditioningLeucine
Skin ConditioningPentasodium Pentetate
Carnosine
Skin ConditioningPolyquaternium-61
Skin Conditioning1,2-Hexanediol
Skin ConditioningHydrogenated Lecithin
EmulsifyingPolyglyceryl-10 Laurate
Skin ConditioningSodium Hyaluronate
HumectantHydrolyzed Hyaluronic Acid
HumectantWater, Glycerin, Butylene Glycol, Propanediol, Methyl Gluceth-20, PEG-75, Serine, Betaine, Sodium Citrate, Dipotassium Glycyrrhizate, PEG-50 Hydrogenated Castor Oil Triisostearate, Phytosteryl/Octyldodecyl Lauroyl Glutamate, Phenoxyethanol, Arginine, Citric Acid, PEG-60 Hydrogenated Castor Oil, Tocopherol, Sodium PCA, Alanine, Lysine Hcl, PCA Ethyl Cocoyl Arginate, Glycine, Ceteth-20, Threonine, Valine, Histidine, Proline, Leucine, Pentasodium Pentetate, Carnosine, Polyquaternium-61, 1,2-Hexanediol, Hydrogenated Lecithin, Polyglyceryl-10 Laurate, Sodium Hyaluronate, Hydrolyzed Hyaluronic Acid
Water
Skin ConditioningButylene Glycol
HumectantPentylene Glycol
Skin ConditioningDipropylene Glycol
HumectantErythritol
HumectantPEG-60 Hydrogenated Castor Oil
EmulsifyingXanthan Gum
EmulsifyingPPG-6-Decyltetradeceth-30
EmulsifyingPEG-32
HumectantDipotassium Glycyrrhizate
HumectantSodium Citrate
BufferingSodium Hyaluronate
HumectantGlycerin
HumectantAcetyl Hexapeptide-38
Skin ConditioningValine
MaskingThreonine
Serine
MaskingLeucine
Skin ConditioningProline
Skin ConditioningHistidine
HumectantGlycine
BufferingAlanine
MaskingArginine
MaskingLysine Hcl
Skin ConditioningCarnosine
Skin ConditioningPhytosteryl/Octyldodecyl Lauroyl Glutamate
Skin ConditioningPolyquaternium-61
Skin ConditioningPhenoxyethanol
PreservativeHydrogenated Lard
EmollientPolyglyceryl-10 Laurate
Skin ConditioningWater, Butylene Glycol, Pentylene Glycol, Dipropylene Glycol, Erythritol, PEG-60 Hydrogenated Castor Oil, Xanthan Gum, PPG-6-Decyltetradeceth-30, PEG-32, Dipotassium Glycyrrhizate, Sodium Citrate, Sodium Hyaluronate, Glycerin, Acetyl Hexapeptide-38, Valine, Threonine, Serine, Leucine, Proline, Histidine, Glycine, Alanine, Arginine, Lysine Hcl, Carnosine, Phytosteryl/Octyldodecyl Lauroyl Glutamate, Polyquaternium-61, Phenoxyethanol, Hydrogenated Lard, Polyglyceryl-10 Laurate
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Alanine is an amino acid and is already found in the human body. Our skin uses alanine to build collagen, elastin, and keratin.
Arginine is a semi-essential amino acid. This just means our bodies can product a bit on its own, but sometimes needs a little boost from food sources.
It is a part of your skin's natural moisturizing factor (NMF), or the water-loving molecules in your outermost layer of skin (stratum corneum) that keeps everything hydrated and happy.
Here's an interesting thing about Arginine: your skin converts it into urea through the Krebs-Henseleit urea cycle. Urea is one of the most effective humectants your skin naturally produces.
A clinical study showed applying 2.5% arginine hydrochloride to atopic dermatitis skin showed significant urea levels in the stratum corneum and improved moisture in just four weeks.
Arginine is also a precursor to nitric oxide; nitric oxide improves microcirculation and supports wound healing and collagen synthesis.
One study found that an amino acid complex containing Arginine reduced skin irritation, improved hydration, and accelerated skin repair in clinical / in-vivo studies.
Arginine itself is an amino acid and not a fatty acid, oil, or ester. On its own, it's not a direct food source for Malassezia, or the yeast that causes fungal acne.
Learn more about ArginineButylene 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 GlycolCarnosine is a dipeptide made from two amino acids.
This ingredient helps:
Glycation is the process of sugars binding to and damaging proteins. Too much sugar in our skin can lead to damaged collagen, contributing to factors of aging.
Carnosine is water-soluble and is not able to travel deeper layers of skin. This leads to some doubt about whether it can boost collagen in skin, since collagen is located in the deeper layers of skin.
Fun fact: Carnosine can be naturally found in our muscles and brain.
Learn more about CarnosineDipotassium Glycyrrhizate comes from licorice root.
Extracts of licorice have demonstrated to have antibacterial, anti‐inflammatory, antiviral, antioxidant properties.
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.
Licorice root is native to Southern Europe and Asia. It has been used in traditional Chinese medicine to help with respiratory issues.
Learn more about Dipotassium GlycyrrhizateGlycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.
Topically, glycerin does several things at once:
Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3.
Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin.
This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products.
Just know very high concentrations (>40%) can feel tacky in low humidity.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Learn more about GlycerinGlycine is the smallest amino acid and a key building block of collagen. It's part if your skin's Natural Moisturizing Factor (NMF), or the water-loving molecules in your outermost layer of skin (stratum corneum) that keeps everything hydrated and happy.
A study from 2022 found that an amino acid complex featuring taurine, arginine, and glycine significantly reduced skin irritation, improved redness, and accelerated the skin repair process.
Histidine is a semi-essential amino acid used by our bodies to create protein. It has humectant and skin conditioning properties.
Our bodies use histidine to create filaggrin - filaggrin is a structural protein that the skin uses in maintaining skin barrier.
One study found histidine and carnosine to be a dynamic duo for your skin:
Oral histidine has also been found to help with filaggrin-deficit skin disorders such as atopic dermatitis.
Why is it considered a semi-essential amino acid? This is because adults are able to create it but children must get it from their diet.
Learn more about HistidineLeucine is a small amino acid and one of the building blocks your body uses to make proteins.
It's also naturally found in your skin as part of your Natural Moisturizing Factor (NMF). Your NMF is a mix of water-binding molecules that keeps the outer skin layer hydrated and flexible.
In skincare, it's mainly used as a skin conditioning ingredient that helps reinforce the same moisture-retention function.
You'll usually see it used at low percentages (generally under 5%) which is in line with how amino acids are used in cosmetics.
Learn more about LeucineLysine HCl is an alpha amino acid salt.
Our skin uses amino acids as a precursor for building protein, and therefore keratins, collagen and elastin.
Peg-60 Hydrogenated Castor Oil comes from hydrogenated castor oil. It is a solubilizer and emulsifier.
As a solubilizer, it helps dissolve ingredients into a water-based version. It is also an emulsifer. Emulsifier help prevent oils and water from separating. Both these properties help create evenly-spread and uniform products.
Basically, Peg-60 Hydrogenated Castor Oil helps hold ingredients together.
Learn more about PEG-60 Hydrogenated Castor OilPhenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!).
It has a large spectrum of antimicrobial activity and especially effective bacteria, yeast, and mold while only having a weak effect on your skin's natural microbiome.
On a cellular level, it disrupts the cell membranes of microbes by poking holes that make the cell leak. This shuts down the chemical reactions the microbe needs to make energy so it can no longer survive.
Another perk of this ingredient is that it stays functional across a wide pH range (3-10).
You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin to Phenoxyethanol damages bacterial membranes as effectively as doubling the Phenoxyethanol concentration on its own.
Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU.
Safety-wise, the fear mongering does not hold up to the evidence. The EU's Scientific Committee on Consumer Safety and FDA consider it safe as a preservative at up to 1%, including for children of all ages.
Adverse systemic effects only showed up in animal studies at exposures roughly 200x higher than what people get from cosmetics. And despite its very widespread use, this ingredient is a rare sensitizer and allergic reactions are uncommon.
Learn more about PhenoxyethanolWe don't have a description for Phytosteryl/Octyldodecyl Lauroyl Glutamate yet.
Polyglyceryl-10 Laurate is a cleansing agent and emulsifier.
It rounds up dirt, oil, and grime, so they can be rinsed off easily as a cleanser.
On the emulsifier side, it keeps your formula smooth and well-mixed by playing peacekeeper for ingredients that don't naturally get along (like oil and water).
Because it has a C12 (lauric acid) fatty acid chain, this ingredient can potentially feed the Malassezia yeast that causes fungal acne. The Malassezia yeast prefers esters with C11-C24 fatty acids.
This ingredient is an ester of lauric acid and Polyglycerin-10.
Learn more about Polyglyceryl-10 LaurateWe don't have a description for Polyquaternium-61 yet.
Proline is a non-essential amino acid, meaning your body can make it on its own. In skincare, it is a skin conditioning ingredient that keeps skin soft and hydrated.
It makes up about 23% of the collagen molecule (collagen is the protein responsible for keeping your skin firm) and is involved in your skin's natural hyaluronic acid production. When applied topically, proline can penetrate the skin fairly well due to its small molecular size.
Reviews of this ingredient have found it to be neither a dermal irritant nor a sensitizer.
Fun fact: Proline can be found in protein-rich foods like meat, fish, eggs, and dairy.
Learn more about ProlineSerine is a non-essential amino acid (your body makes it on its own!). It is a major player in your skin's natural moisturizing factor (NMF), or the water-loving molecules in your outermost layer of skin (stratum corneum) that keeps everything hydrated and happy.
Serine is one of your NMF's most abundant components that works as a skin-identical humectant. Its hydroxyl group grabs onto water molecules to boost hydration without any heaviness or occlusion.
Research on a hydrogel with serine confirmed this serine got delivered to your stratum corneum and demonstrated enhanced skin moisturization.
Interestingly serine also helps your skin produce filaggrin, a protein that keeps your skin barrier strong and used to create collagen.
Learn more about SerineSodium Citrate is the sodium salts of citric acid. In skincare, it is used to alter pH levels and acts as a preservative.
Its main functions are to maintain the pH of a product and neutralize metal ions.
The acidity of our skin is maintained by our glands and skin biome; normal pH level of skin is slightly acidic (~4.75-5.5).
Being slightly acidic allows our skin to create an "acid mantle". This acid mantle is a thin barrier that protects our skin from bacteria and contaminants.
Learn more about Sodium CitrateSodium Hyaluronate is the salt form of hyaluronic acid. It is a long sugar chain that is naturally found in your skin, joints, and connective tissue that maintains hydration and elasticity.
In skincare, it works as a humectant. It pulls water from the environment and deeper layers of skin and binds it to the surface.
Interestingly, the size of the molecule affects its behavior:
Some clinical evidence links low molecular weight versions to improved wrinkle depth, elasticity, anti-inflammatory effects, and barrier repair.
Many serums use a blend of both weights so you can get surface hydration plus longer-lasting and deeper effects.
You'll typically see concentrations between 0.1-2% for this ingredient.
Learn more about Sodium HyaluronateThreonine is an amino-acid. It helps hydrate the skin and has antioxidant benefits.
Our skin uses threonine for creating collagen and elastin. Humans are not able to create threonine and must get it through eating foods such as fish, lentils, poultry, sesame seeds, and more.
Valine is one of the essential amino acids (meaning your body can't make it on its own and has to get it from food).
In skincare, it's usually synthetically-made or pulled from plant proteins like soy.
It's one of the small building blocks that make up your skin's natural moisturizing factor (NMF), or the built-in system that helps skin hold onto water. So its main job in a formula is to give the skin gentle hydration and help it feel more comfortable.
Typical amounts are very tiny: roughly 0.00004%-0.5% in leave on products and up to 1% in rinse-off ones.
The Cosmetic Ingredient Review panel has looked at this ingredient and found no evidence of it being a skin irritant or allergen at cosmetic levels.
Learn more about ValineWater. 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. Remember to stay hydrated!
Learn more about Water