innisfree Vitamin C Green Tea Enzyme Brightening Serum Versus Paula's Choice Pro Retinaldehyde Dual-Retinoid Treatment
This brightening serum is formulated around 3-O-Ethyl Ascorbic Acid and Gluconolactone to brighten dull-looking skin and refine skin texture.
This anti-aging treatment is formulated around Retinal and Oleyl Adapalenate to soften the look of wrinkles and refine skin texture.
What's inside
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningPropanediol
Solvent
Glycerin
Humectant
1,2-Hexanediol
Skin Conditioning
3-O-Ethyl Ascorbic Acid
Skin Conditioning
Betaine
Humectant
Erythritol
Humectant
Butylene Glycol
Humectant
Lactobacillus Ferment Lysate
Skin Conditioning
Squalane
Emollient
Helianthus Annuus Seed Oil
Emollient
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Emulsion StabilisingDextrin
AbsorbentXanthan Gum
EmulsifyingTromethamine
BufferingGluconolactone
Skin Conditioning
Citrus Unshiu Peel Extract
MaskingPanthenol
Skin Conditioning
Carnosine
Skin Conditioning
Niacinamide
Smoothing
Allantoin
Skin Conditioning
Hyaluronic Acid
Humectant
Caprylic/Capric Triglyceride
Masking
Daucus Carota Sativa Root Extract
Skin Conditioning
Pentylene Glycol
Skin Conditioning
Sodium Metaphosphate
BufferingSilica Dimethyl Silylate
EmollientTocopherol
Antioxidant
Ethylhexylglycerin
Skin ConditioningCyclodextrin
AbsorbentMadecassoside
Antioxidant
Ascorbyl Tetraisopalmitate
Antioxidant
Salix Alba Bark Extract
Astringent
Dipotassium Glycyrrhizate
Humectant
Protease
Exfoliating
Tranexamic Acid
Astringent
Glutathione
Achillea Millefolium Extract
CleansingSodium Hyaluronate
Humectant
Beta-Carotene
Skin ConditioningFerulic Acid
Antimicrobial
Hydrolyzed Hyaluronic Acid
Humectant
Sodium Hyaluronate Crosspolymer
Humectant
Sodium Acetylated Hyaluronate
Humectant
Water, Propanediol, Glycerin, 1,2-Hexanediol, 3-O-Ethyl Ascorbic Acid, Betaine, Erythritol, Butylene Glycol, Lactobacillus Ferment Lysate, Squalane, Helianthus Annuus Seed Oil, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Dextrin, Xanthan Gum, Tromethamine, Gluconolactone, Citrus Unshiu Peel Extract, Panthenol, Carnosine, Niacinamide, Allantoin, Hyaluronic Acid, Caprylic/Capric Triglyceride, Daucus Carota Sativa Root Extract, Pentylene Glycol, Sodium Metaphosphate, Silica Dimethyl Silylate, Tocopherol, Ethylhexylglycerin, Cyclodextrin, Madecassoside, Ascorbyl Tetraisopalmitate, Salix Alba Bark Extract, Dipotassium Glycyrrhizate, Protease, Tranexamic Acid, Glutathione, Achillea Millefolium Extract, Sodium Hyaluronate, Beta-Carotene, Ferulic Acid, Hydrolyzed Hyaluronic Acid, Sodium Hyaluronate Crosspolymer, Sodium Acetylated Hyaluronate
Water
Skin ConditioningCaprylic/Capric Triglyceride
Masking
Simmondsia Chinensis Seed Oil
Emollient
Dimethicone
Emollient
Polyglyceryl-2 Stearate
Emulsifying
Propanediol
Solvent
Polyglyceryl-3 Diisostearate
Emulsifying
Sodium Stearoyl Glutamate
CleansingRetinal
Skin Conditioning
Oleyl Adapalenate
Tocopherol
Antioxidant
Tocopheryl Acetate
Antioxidant
Saccharomyces Ferment Filtrate
Humectant
Albatrellus Confluens Extract
Humectant
Punica Granatum Pericarp Extract
Skin ConditioningGlyceryl Stearate
Emollient
Stearyl Alcohol
Emollient
Hydroxyapatite
Abrasive
Butylene Glycol
Humectant
Cetyl Glyceryl Ether
EmollientRicinus Communis Seed Oil
Masking
Sodium Polyacrylate
Absorbent
Isopropyl Myristate
Emollient
Hydroxyacetophenone
Antioxidant
Caprylhydroxamic Acid
Sodium Phytate
Xanthan Gum
EmulsifyingGlycerin
Humectant
Hydroxystearic Acid
Cleansing
Ceramide AP
Skin Conditioning
1,2-Hexanediol
Skin Conditioning
Sorbitan Oleate
Emulsifying
Naringin
Skin ProtectingCitric Acid
Buffering
Titanium Dioxide
Cosmetic Colorant
Water, Caprylic/Capric Triglyceride, Simmondsia Chinensis Seed Oil, Dimethicone, Polyglyceryl-2 Stearate, Propanediol, Polyglyceryl-3 Diisostearate, Sodium Stearoyl Glutamate, Retinal, Oleyl Adapalenate, Tocopherol, Tocopheryl Acetate, Saccharomyces Ferment Filtrate, Albatrellus Confluens Extract, Punica Granatum Pericarp Extract, Glyceryl Stearate, Stearyl Alcohol, Hydroxyapatite, Butylene Glycol, Cetyl Glyceryl Ether, Ricinus Communis Seed Oil, Sodium Polyacrylate, Isopropyl Myristate, Hydroxyacetophenone, Caprylhydroxamic Acid, Sodium Phytate, Xanthan Gum, Glycerin, Hydroxystearic Acid, Ceramide AP, 1,2-Hexanediol, Sorbitan Oleate, Naringin, Citric Acid, Titanium Dioxide
Reviews
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
1,2-Hexanediol is a synthetic liquid and another multi-functional powerhouse.
It is a:
- Humectant, drawing moisture into the skin
- Emollient, helping to soften skin
- Solvent, dispersing and stabilizing formulas
- Preservative booster, enhancing the antimicrobial activity of other preservatives
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 GlycolCaprylic/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 TriglycerideGlycerin (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 GlycerinPropanediol 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 PropanediolTocopherol 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
