What's inside
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningGlycerin
HumectantCaprylic/Capric Triglyceride
MaskingCyclopentasiloxane
EmollientSucrose Palmitate
EmollientDimethicone
EmollientCetearyl Olivate
Hydrogenated Olive Oil
Skin ConditioningSorbitan Olivate
EmulsifyingGlyceryl Linoleate
EmollientTocopheryl Acetate
AntioxidantOlea Europaea Fruit Oil
MaskingPhenoxyethanol
PreservativeIsomalt
HumectantCitrus Grandis Peel Oil
MaskingLimonene
PerfumingAlbizia Julibrissin Bark Extract
MaskingAloe Barbadensis Leaf Extract
EmollientBisabolol
AntioxidantBrassica Campestris/Aleurites Fordi Oil Copolymer
Skin ConditioningButyrospermum Parkii Butter
Skin ConditioningPullulan
Olea Europaea Oil Unsaponifiables
Skin ConditioningSteareth-20
CleansingAllantoin
Skin ConditioningSodium Polystyrene Sulfonate
Emulsion StabilisingMalus Domestica Fruit Cell Culture Extract
Skin ConditioningTetrahexyldecyl Ascorbate
AntioxidantPolyacrylamide
Carbomer
Emulsion StabilisingSodium Benzoate
MaskingC13-14 Isoparaffin
EmollientHesperidin Methyl Chalcone
AntioxidantEthylhexylglycerin
Skin ConditioningSaccharomyces Cerevisiae Extract
Skin ConditioningGlycine Soja Sterols
EmollientLinoleic Acid
CleansingNannochloropsis Oculata Extract
HumectantPhospholipids
Skin ConditioningPotassium Sorbate
PreservativeCitric Acid
BufferingSodium Hyaluronate
HumectantXanthan Gum
EmulsifyingFarnesol
PerfumingLeontopodium Alpinum Meristem Cell Culture
Skin ConditioningSodium Hydroxide
BufferingLaureth-7
EmulsifyingSodium Citrate
BufferingChlorhexidine Digluconate
AntimicrobialLecithin
EmollientEchinacea Angustifolia Extract
MoisturisingN-Hydroxysuccinimide
Skin ConditioningDipeptide Diaminobutyroyl Benzylamide Diacetate
Skin ConditioningHydroxypropyl Cyclodextrin
MaskingPalmitoyl Tripeptide-38
Skin ConditioningVitis Vinifera Fruit Cell Extract
Skin ConditioningCaprylyl Glycol
EmollientCamellia Sinensis Leaf Extract
AntimicrobialDipeptide-2
Skin ConditioningArgania Spinosa Callus Culture Extract
Skin ConditioningCitral
PerfumingDarutoside
Skin ConditioningPalmitoyl Tetrapeptide-7
Skin ConditioningAcetyl Hexapeptide-8
HumectantTocopherol
AntioxidantChrysin
Skin ConditioningPalmitoyl Tripeptide-1
Skin ConditioningAcetyl Octapeptide-3
HumectantBiotin
AntiseborrhoeicWater, Glycerin, Caprylic/Capric Triglyceride, Cyclopentasiloxane, Sucrose Palmitate, Dimethicone, Cetearyl Olivate, Hydrogenated Olive Oil, Sorbitan Olivate, Glyceryl Linoleate, Tocopheryl Acetate, Olea Europaea Fruit Oil, Phenoxyethanol, Isomalt, Citrus Grandis Peel Oil, Limonene, Albizia Julibrissin Bark Extract, Aloe Barbadensis Leaf Extract, Bisabolol, Brassica Campestris/Aleurites Fordi Oil Copolymer, Butyrospermum Parkii Butter, Pullulan, Olea Europaea Oil Unsaponifiables, Steareth-20, Allantoin, Sodium Polystyrene Sulfonate, Malus Domestica Fruit Cell Culture Extract, Tetrahexyldecyl Ascorbate, Polyacrylamide, Carbomer, Sodium Benzoate, C13-14 Isoparaffin, Hesperidin Methyl Chalcone, Ethylhexylglycerin, Saccharomyces Cerevisiae Extract, Glycine Soja Sterols, Linoleic Acid, Nannochloropsis Oculata Extract, Phospholipids, Potassium Sorbate, Citric Acid, Sodium Hyaluronate, Xanthan Gum, Farnesol, Leontopodium Alpinum Meristem Cell Culture, Sodium Hydroxide, Laureth-7, Sodium Citrate, Chlorhexidine Digluconate, Lecithin, Echinacea Angustifolia Extract, N-Hydroxysuccinimide, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Hydroxypropyl Cyclodextrin, Palmitoyl Tripeptide-38, Vitis Vinifera Fruit Cell Extract, Caprylyl Glycol, Camellia Sinensis Leaf Extract, Dipeptide-2, Argania Spinosa Callus Culture Extract, Citral, Darutoside, Palmitoyl Tetrapeptide-7, Acetyl Hexapeptide-8, Tocopherol, Chrysin, Palmitoyl Tripeptide-1, Acetyl Octapeptide-3, Biotin
Water
Skin ConditioningGlycerin
HumectantButylene Glycol
HumectantCetearyl Alcohol
EmollientDipalmitoyl Hydroxyproline
Skin ConditioningCaprylic/Capric Triglyceride
MaskingPolysorbate 20
EmulsifyingCeteareth-20
CleansingCyclopentasiloxane
EmollientPEG-8/Smdi Copolymer
PEG-8 Dimethicone
EmulsifyingAcrylates/C10-30 Alkyl Acrylate Crosspolymer
Emulsion StabilisingPhenoxyethanol
PreservativeImperata Cylindrica Root Extract
Skin ConditioningSodium Hydroxide
BufferingCaprylyl Glycol
EmollientGlycine Soja Sterols
EmollientLinoleic Acid
CleansingPhospholipids
Skin ConditioningTetrahexyldecyl Ascorbate
AntioxidantEthylhexylglycerin
Skin ConditioningHexylene Glycol
EmulsifyingSteareth-20
CleansingDisodium EDTA
Carbomer
Emulsion StabilisingSodium Lactate
BufferingCitrus Nobilis Peel Oil
MaskingPEG-8
HumectantLimonene
PerfumingEchinacea Angustifolia Extract
MoisturisingLeuconostoc/Radish Root Ferment Filtrate
AntimicrobialXanthan Gum
EmulsifyingSodium Citrate
BufferingChlorhexidine Digluconate
AntimicrobialN-Hydroxysuccinimide
Skin ConditioningDipeptide Diaminobutyroyl Benzylamide Diacetate
Skin ConditioningHyaluronic Acid
HumectantCentella Asiatica Extract
CleansingPotassium Sorbate
PreservativeHesperidin Methyl Chalcone
AntioxidantAcetyl Octapeptide-3
HumectantGlycine
BufferingMagnesium Ascorbyl Phosphate
AntioxidantOlea Europaea Leaf Extract
PerfumingRetinyl Palmitate
Skin ConditioningCitric Acid
BufferingPalmitoyl Tripeptide-1
Skin ConditioningDarutoside
Skin ConditioningPalmitoyl Pentapeptide-4
Skin ConditioningPalmitoyl Tetrapeptide-7
Skin ConditioningAcetyl Hexapeptide-8
HumectantGlucose
HumectantChrysin
Skin ConditioningPalmitoyl Tripeptide-5
Skin ConditioningMalus Domestica Fruit Cell Culture Extract
Skin ConditioningBiotin
AntiseborrhoeicDipeptide-2
Skin ConditioningCarrageenan
Tocopherol
AntioxidantLecithin
EmollientWater, Glycerin, Butylene Glycol, Cetearyl Alcohol, Dipalmitoyl Hydroxyproline, Caprylic/Capric Triglyceride, Polysorbate 20, Ceteareth-20, Cyclopentasiloxane, PEG-8/Smdi Copolymer, PEG-8 Dimethicone, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Phenoxyethanol, Imperata Cylindrica Root Extract, Sodium Hydroxide, Caprylyl Glycol, Glycine Soja Sterols, Linoleic Acid, Phospholipids, Tetrahexyldecyl Ascorbate, Ethylhexylglycerin, Hexylene Glycol, Steareth-20, Disodium EDTA, Carbomer, Sodium Lactate, Citrus Nobilis Peel Oil, PEG-8, Limonene, Echinacea Angustifolia Extract, Leuconostoc/Radish Root Ferment Filtrate, Xanthan Gum, Sodium Citrate, Chlorhexidine Digluconate, N-Hydroxysuccinimide, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Hyaluronic Acid, Centella Asiatica Extract, Potassium Sorbate, Hesperidin Methyl Chalcone, Acetyl Octapeptide-3, Glycine, Magnesium Ascorbyl Phosphate, Olea Europaea Leaf Extract, Retinyl Palmitate, Citric Acid, Palmitoyl Tripeptide-1, Darutoside, Palmitoyl Pentapeptide-4, Palmitoyl Tetrapeptide-7, Acetyl Hexapeptide-8, Glucose, Chrysin, Palmitoyl Tripeptide-5, Malus Domestica Fruit Cell Culture Extract, Biotin, Dipeptide-2, Carrageenan, Tocopherol, Lecithin
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Acetyl Hexapeptide-8 (also known as Argireline) is a synthetic hexapeptide that is often called a "topical Botox alternative".
It works by mimicking how Botox relaxes muscles; it interferes with the signaling process that tells your facial muscles to contract. This can help soften expression lines like forehead wrinkles or crow's feet over time.
The comparison to Botox does have limits because the molecule is water-loving and relatively large.
Acetyl Hexapeptide-8 has a hard time absorbing deeply enough through the skin's outer barrier to actually reach the muscles.
So whether it truly works the way Botox does at a biological level is still up for debate, but early clinical outcomes are fairly encouraging.
A 12 week human study of a multi-ingredient regimen containing this ingredient saw:
While some studies have observed improvements in wrinkle appearance, it is important to note that more consistent results are seen in multi-ingredient formulations (vs just Acetyl Hexapeptide-8 alone).
Some research studies also used higher concentrations (up to 10%) while this ingredient is usually found in concentrations up to 0.005% in leave-on formulations.
Learn more about Acetyl Hexapeptide-8Acetyl Octapeptide-3 is a synthetic peptide also commonly known as SNAP-8. It is a lab-made peptide often marketed as a gentler, topical alternative to Botox.
It works by mimicking part of a protein involved in muscle contractions, which may help relax facial tension and reduce the appearance of fine lines (mostly around the eyes and forehead).
It’s considered a “next-gen” version of Argireline (Acetyl Hexapeptide-8), an older peptide with more research behind it that also supports collagen production.
SNAP-8 showed slightly better results than Argireline in one small manufacturer-funded study, but there’s limited independent research. Plus, most tests use concentrations higher than what’s typically found in skincare products.
This ingredient might offer a subtle smoothing effect but it won't don’t deliver the dramatic results of actual Botox injections.
Think of it more like a supporting actor in your skincare lineup.
Learn more about Acetyl Octapeptide-3Biotin is a B vitamin that is naturally produced by our bodies. It is also called Vitamin H.
Our bodies use biotin in the metabolism process. It also helps our bodies use enzymes and move nutrients around. A biotin deficiency can lead to brittle hair and nails.
More research is needed on applying biotin topically. However, taking biotin orally has been shown to help nourish the skin, hair, and nails. They play a role in forming skin-hydrating fatty acids.
Biotin is water-soluble. It can be found in foods such as fish, eggs, dairy, nuts, and meat. Vitamin H stands for "haar" and "haut". These are the German words for hair and skin.
Learn more about BiotinCaprylic/Capric Triglyceride (aka MCT Oil) is a lightweight emollient, solvent, and texture enhancer. It is considered a skin-softener by helping to prevent moisture loss.
Though it behaves like an oil, it is not technically one due to its chemical composition. One perk of this ingredient is that it is very stable, resistant to oxidation, and unlikely to go rancid.
In practice, that translates to a long shelf life and a consistently elegant skin feel.
While there is an assumption Caprylic Triglyceride can clog pores due to it being derived from coconut oil, there is no research supporting this. Just patch test if you have concerns.
Fractionated coconut oil and MCT Oil are both listed as Caprylic/Capric Triglyceride according to INCI. This is because INCI names are based on the ingredient’s final chemical composition and not its marketing name or source.
This ingredient is treated as the gold standard fungal acne safe oil. Even though it is coconut derived, the problematic lauric acid is stripped out.
This leaves just caprylic (C8) and capric (C10) acid. These chain lengths actually trend antifungal; a 2020 study found caprylic acid was enough to disrupt Malassezia furfur cell membrane, with a caprylic acid derivative damaging membrane structures at concentrations as low as 0.2%.
Learn more about Caprylic/Capric TriglycerideCaprylyl Glycol is a humectant, skin conditioner, emollient, and preservative booster derived from either caprylic acid or synthetically created.
Typical use levels vary from 0.3-1% as a preservative booster and go up to 2% to condition skin.
Because it is not a free-fatty acid, this ingredient is fungal acne safe (there's nothing for Malassezia to feed on).
Learn more about Caprylyl GlycolCarbomer is a high-molecular weight polymer of acrylic acid. It is used to form gels and thicken formulas.
Due to its large molecular size, carbomer has minimal skin penetration and is considered an inert ingredient.
A high amount of carbomer can cause pilling or balling up of products. Don't worry, most products contain 1% or less of carbomer.
Learn more about CarbomerChlorhexidine Digluconate is a preservative.
We don't have a description for Chrysin yet.
Citric Acid is an alpha hydroxy acid (AHA) naturally found in citrus fruits like oranges, lemons, and limes.
Like other AHAs, citric acid can exfoliate skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath.
However, this exfoliating effect only happens at high concentrations (20%) which can be hard to find in cosmetic products.
Due to this, citric acid is usually included in small amounts as a pH adjuster. This helps keep products slightly more acidic and compatible with skin's natural pH.
In skincare formulas, citric acid can:
While it can provide some skin benefits, research shows lactic acid and glycolic acid are generally more effective and less irritating exfoliants.
Most citric acid used in skincare today is made by fermenting sugars (usually from molasses). This synthetic version is identical to the natural citrus form but easier to stabilize and use in formulations.
Read more about some other popular AHA's here:
Learn more about Citric AcidCyclopentasiloxane (D5) is a lightweight silicone that mostly acts as an emollient and solvent in cosmetics. Its the reason your products feel silky, fast-spreading, and non-greasy.
Since D5 is volatile, it does its thing and then evaporates off the skin quickly.
The safety profile of this ingredient is reassuring; the US CIR Expert Panel concluded D5 is safe as used in cosmetics and Health Canada concluded that D5 is not harmful to human health or the environment as currently used in cosmetics
There's a study that people mention about D5 in a rat study showing tumors. This study is related to long-term inhalation of high D5 levels.
Regulatory bodies have judged this study to be not applicable in topical skincare since skin absorption of D5 is very low and we're not really inhaling huge amounts of D5.
The only restriction for this ingredient is environmental. The European Chemicals Agency (ECHA) restricted D5 in wash-off cosmetics at or above 0.1% due to their persistence in water.
Learn more about CyclopentasiloxaneWe don't have a description for Darutoside yet.
This small molecule peptide has similar benefits to Argireline, the "botox" peptide.
According to the manufacturer, this peptide mimics snake venom to freeze muscles. This prevents muscle movement and contractions to prohibit the formation of fine lines and wrinkles.
While this seems promising, research is lacking in proving this ingredient to be as effective as botox.
Learn more about Dipeptide Diaminobutyroyl Benzylamide DiacetateDipeptide-2 is a peptide. It can help to reduce the effects of aging.
We don't have a description for Echinacea Angustifolia Extract yet.
Ethylhexylglycerin is created from glycerin. It is a multitasker ingredient that:
The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure to patch test if you are unsure.
Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations.
Learn more about EthylhexylglycerinGlycerin (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 Soja Sterols are plant-derived fatty alcohols (phytosterols) from soybean.
You can think of them like the plant world's version of cholesterol; they're structurally similar enough to slot into your skin's lipid barrier and help it do its job.
Phytosterols aid skin barrier recovery by traveling deeper into the skin rather than just sitting on top of it. Once inside, they reduce transepidermal water loss (TEWL) and keep skin feeling soft / supple.
Research on phytosterols in keratinocyte and macrophase models has shown meaningful inhibition of pro-inflammatory mediators. This supports their reputation as a calming ingredient for reactive or sensitive skin.
Subjects with soy allergies did not show a reaction to phytosterols in safety tests, but it wouldn't hurt to patch test if you do have a soy allergy.
Fungal acne:
Malassezia uses sterols to build its own cell walls so there's a theoretical concern that it could also make use of sterol ingredients in skincare.
Though no study has actually proven this happens with topical products, we err on the side of caution and list this ingredient as not safe for fungal acne. However, it may not be a trigger for everyone.
Learn more about Glycine Soja SterolsHesperidin Methyl Chalcone (HMC) is a modified form of hesperidin, a citrus flavonoid. It has antioxidant properties.
In preclinical research, HMC has been studied for its ability to reduce oxidative stress and inflammation related to UVB exposure. Outside of cosmetics, HMC has been looked at for its effects on capillary leakage and swelling. This is why you'll often see this ingredient in eye creams.
Overall, HMC is a gentle and supportive ingredient. Further research is needed on the claims that this ingredient can "erase dark circles".
Learn more about Hesperidin Methyl ChalconeLecithin is a term for a group of substances found in the cell membranes of plants, animals, and humans. They are made up of phospholipids.
Thanks to its amphiphilic structure (water-loving head and oil-loving tail), it is a true multitasker:
It plays well with most ingredients and is typically used at 0.1-1%. However, concentrations up to 50% have been reported in moisturizers.
Learn more about LecithinLimonene is a fragrance that adds scent and taste to a formulation.
It's found in the peel oil of citrus fruits and other plants such as lavender and eucalyptus. The scent of limonene is generally described as "sweet citrus".
Limonene acts as an antioxidant, meaning it helps neutralize free radicals.
When exposed to air, oxidized limonene may sensitize the skin. Because of this, limonene is often avoided by people with sensitive skin.
The term 'fragrance' is not regulated in many countries. In many cases, it is up to the brand to define this term. For instance, many brands choose to label themselves as "fragrance-free" because they are not using synthetic fragrances. However, their products may still contain ingredients such as essential oils that are considered a fragrance.
Learn more about LimoneneLinoleic Acid is also known as Vitamin F. It is a fatty acid with emollient and skin conditioning properties.
Our top layer of skin, or epidermis, naturally contains high amounts of linoleic acid.
Your body uses linoleic acid to build ceramides and prostaglandins. Ceramides keep your skin's barrier hydrated and strong while prosaglandins help control inflammation and healing.
Needless to say, linoleic acid is crucial for having a strong skin barrier.
One study found applying linoleic acid rich sunflower oil to be more effective at repairing the skin barrier than olive oil.
This ingredient can also help treat acne by softening sebum to prevent clogged pores. Another study found using 2.5% linoleic acid gel for 4 weeks showed a 25% reduction in small comedones.
Studies show it can also help lighten hyperpigmentation or sun spots by disrupting the melanin production process. It also helps your skin shed melanin pigment from your skin caused by UV exposure.
Due to its role in the production of the fatty acid prostaglandin, linoleic acid can also help reduce inflammation and support wound healing.
Fun fact: Linoleic acid is an essential fatty acid. This means our bodies cannot create it on its own and we need to get it through foods such as nuts and vegetable oils.
Just know this ingredient is not always fungal-acne safe because it is a long-chain fatty acid (with 18 carbon atoms) that directly feeds the Malassezia yeast responsible for fungal acne.
Learn more about Linoleic AcidThis ingredient comes from a rare Swiss apple known as Uttwiler Spätlauber. It is produced from the cell cultures of the apple and not the fruit itself.
According to manufacturer studies, this ingredient has demonstrated the following benefits:
- Visible anti-wrinkle effect around the eye area (in vivo)
- Enhanced colony-forming efficiency of epidermal stem cells (in vitro)
- Improved ability of skin cells to regenerate and build new tissues in a 3D epidermis model (in vitro)
- Increased skin density (in vitro)
- Boosted vitality of epidermal stem cells (in vitro)
- Reversal of cellular aging signs in fibroblasts (in vitro)
We don't have a description for N-Hydroxysuccinimide yet.
Palmitoyl Tetrapeptide-7 (formerly Palmitoyl Tetrapeptide-3) is a synthetic peptide. Its main job is to fight what researchers call "inflammaging".
"Inflammaging" is the slow, low-grade chronic inflammation that quietly breaks down collagen as we age.
This ingredient calms down a specific inflammation signal in your skin cells (called IL-6). When left unchecked, this signal triggers enzymes that break down collagen and elastin.
Clinical testing showed statistically significant improvements in:
Studies also found the more of this ingredient used, the more your skin produces Collagen I, fibronectin, and hyaluronic acid.
You'll likely see this ingredient paired with Palmitoyl Tripeptide-1 in the well-known Matrixyl 3000 complex for enhanced anti-aging effects.
A 3% concentration applied twice daily for two months showed meaningful skin rejuvenation results in clinical panels.
Fungal acne note:
Usually a palmitic acid component can feed Malassezia in unbound form, but here is is covalently bonded to the peptide. This means it is very difficult for Malassezia to access, and therefore very unlikely to cause fungal acne.
Palmitoyl Tripeptide-1 (aka Pal-GHK) is a synthetic signal peptide made of three amino acids attached to palmitic acid.
That fatty acid attachment is the key: it boosts the peptide's ability to penetrate the skin barrier. This puts it closer to the dermal cells where it can actually make a difference.
Once there, it acts as a matrikine, a signaling peptide that prompts fibroblasts to produce more collagen, fibronectin, and hyaluronic acid.
In vitro studies show it can boost collagen production in skin cells even when UV-damaged skin samples were treated with it at a tiny concentration (it almost fully restored dermal collagen at 5ppm). It achieved this at 100x lower concentration than retinoic acid, which needed 500 ppm to do the same thing.
Human clinical data is promising, but modest:
A study of 23 female volunteers found a small but statistically significant increase (~4%) in skin thickness after treatment at 4 ppm.
A separate small trial of 15 women showed statistically significant reductions in wrinkle length, depth, and skin roughness after applying it twice daily for four weeks.
You'll likely see Pal-GHK paired with Palmitoyl Tetrapeptide-7 as part of the Matrixyl 3000 complex.
Fungal acne note:
Usually a palmitic acid component can feed Malassezia in unbound form, but here is is covalently bonded to the peptide. This means it is very difficult for Malassezia to access, and therefore very unlikely to cause fungal acne.
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.
Phospholipids are a family of skin-identical lipids that makeup the structural backbone of every cell membrane in your body.
In cosmetics, they function as skin conditioning agents with emulsifier and surfactant properties. They're typically sourced from soybean or sunflower lecithin (or sometimes egg yolk or marine sources).
Because they mirror the lipids naturally found in the deeper layers of your skin, topical phospholipids help reinforce the lipid matrix, reduce transepidermal water loss, and leave skin feeling conditioned.
They're also used to form liposomes, or tiny self-assembling vesible used to stabilize actives like vitamin c or retinol. This helps these ingredients integrate into the upper layers of skin more easily.
Phospholipids are compatible with everything and the CIR Expert Panel has concluded them to be safe at current use levels.
Some types of phospholipids include:
Learn more about PhospholipidsPotassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.
This ingredient comes from potassium salt derived from sorbic acid. Sorbic acid is a natural antibiotic and effective against fungus.
Both potassium sorbate and sorbic acid can be found in baked goods, cheeses, dried meats, dried fruit, ice cream, pickles, wine, yogurt, and more.
You'll often find this ingredient used with other preservatives.
Learn more about Potassium SorbateSodium 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 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.
In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline.
Your skin has a natural pH and acid mantle. This acid mantle helps prevent harmful bacteria from breaking through. The acid mantle also helps keep your skin hydrated.
"Alkaline" refers to a high pH level. A low pH level would be considered acidic.
Learn more about Sodium HydroxideSteareth-20 is an emulsifier and solubilizer. It is created from stearyl alcohol with ~20 units of ethylene oxide to give it a strong preference for water.
As an emulsifier, it helps oil-in-water emulsions like lotions, creams, and cleansers stay stable. It also solubilizes small amounts of oil-loving ingredients (like fragrance) into water-based formulas.
You'll likely find this ingredient with steareth-2 (it's oil-loving sister) where the two work together to give products a cushiony feel.
Typical use levels sit at around 1-5% and this ingredient has been found to be non-irritating by the CIR Expert Panel.
Learn more about Steareth-20Tetrahexyldecyl Ascorbate (THD) is a stable and oil-soluble form of Vitamin C.
THD is special in that it has the ability to travel deeper into skin than traditional ascorbic acid while maintaining the same skin benefits (double win!).
Because it’s oil-soluble, THD dives deep into your skin’s fatty layers (think ceramides and cholesterol) to fight off the kind of free radicals that mess with your skin barrier. This makes it a great pair with water-based vitamin C (ascorbic acid) that mainly works on the surface.
Even at just 0.1%, THD is already showing great antioxidant activity. When used up to 2%, it helps keep your skin happy and calm, especially when it’s stressed from pollution or sun.
Want to fade dark spots or tackle hyperpigmentation? You’ll want 5% or more. Pairing it with brightening buddies like niacinamide or licorice root gives even better results. One study even used 30% THD with other brighteners and saw real results on stubborn discoloration, even in melasma-prone skin.
A note on THD: It’s has a slightly silky, oily texture and usually shows up colorless or pale yellow (though the exact shade can vary by supplier).
While you can sneak it into water-based formulas, it really shines when paired with silicones or oils, which help your skin soak it up better.
THD is pretty stable, but it’s still vulnerable to degradation like ascorbic acid. Too much light or heat (above 113°F / 45°C) can break it down over time. Go for dark and opaque packaging that keeps it safe and shady!
Read more about other types of Vitamin C:
Learn more about Tetrahexyldecyl AscorbateTocopherol is a fat-soluble antioxidant known as Vitamin E.
You'll find this ingredient in the vast majority of skincare (for good reason). It works to neutralize free radicals, or unstable molecules generated by UV exposure, pollution, and other environmental stressors, before they can cause oxidative damage to your skin cells.
Topically applied tocopherol has been shown to protect against UV damage by ramping up the skin's own natural defense enzymes.
It also acts as a skin conditioning agent; some studies show that regular topical use can improve the skin's water-binding capacity over 2-4 weeks.
This ingredient is especially loved for being a team player. When combined with Vitamin C, the photoprotective effect of both ingredients roughly doubles and the combo also helps reduce UV-induced DNA damage.
This ingredient has some brightening potential but it's more of a prevention ingredient than spot-fader. Cell studies show it can slow down melanin production but it's worth noting that it's not the most powerful brightener out there.
In formulations, it also serves as a stabilizer that helps protect other oxidation-prone ingredients from degrading.
Concentrations usually range from 0.1-1% in most leave-on products.
Learn more about TocopherolWater. 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 WaterXanthan 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