Skin science article
The INKEY List Q10 Serum Versus L'Oreal Revitalift Derm Intensives Night Serum with 0.3% Pure Retinol
The INKEY List Q10 Serum Versus L'Oreal Revitalift Derm Intensives Night Serum with 0.3% Pure Retinol This anti-aging serum is formulated around Squalane and Ubiquinone to soften the look of wrinkles and hydrate skin. This anti-aging serum is formulated around
The INKEY List Q10 Serum Versus L'Oreal Revitalift Derm Intensives Night Serum with 0.3% Pure Retinol
This anti-aging serum is formulated around Squalane and Ubiquinone to soften the look of wrinkles and hydrate skin.
This anti-aging serum is formulated around Retinol to soften the look of wrinkles and refine skin texture.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Butylene Glycol
Propanediol
Glycerin
Dicaprylyl Carbonate
Caprylic/Capric Triglyceride
Dimethicone
Phenoxyethanol
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Caprylyl Glycol
Squalane
Phospholipids
Lecithin
Glycine Soja Oil
Carbomer
Polysorbate 60
Tocopheryl Acetate
Ubiquinone
Sodium Phytate
Glycolipids
Sorbitan Isostearate
Sodium Hydroxide
Glycine Soja Sterols
Leuconostoc/Radish Root Ferment Filtrate
Hyaluronic Acid
Tocopherol
Palmitoyl Dipeptide-5 Diaminobutyroyl Hydroxythreonine
Palmitoyl Dipeptide-5 Diaminohydroxybutyrate
Water, Butylene Glycol, Propanediol, Glycerin, Dicaprylyl Carbonate, Caprylic/Capric Triglyceride, Dimethicone, Phenoxyethanol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Caprylyl Glycol, Squalane, Phospholipids, Lecithin, Glycine Soja Oil, Carbomer, Polysorbate 60, Tocopheryl Acetate, Ubiquinone, Sodium Phytate, Glycolipids, Sorbitan Isostearate, Sodium Hydroxide, Glycine Soja Sterols, Leuconostoc/Radish Root Ferment Filtrate, Hyaluronic Acid, Tocopherol, Palmitoyl Dipeptide-5 Diaminobutyroyl Hydroxythreonine, Palmitoyl Dipeptide-5 Diaminohydroxybutyrate
Alcohol Denat.
Isononyl Isononanoate
Pentylene Glycol
Dicaprylyl Ether
Propylene Glycol
PEG-6 Caprylic/Capric Glycerides
PPG-6-Decyltetradeceth-30
Glyceryl Isostearate
Sodium Hyaluronate
Retinol
Ammonium Polyacryloyldimethyl Taurate
Citric Acid
Trisodium Ethylenediamine Disuccinate
Xanthan Gum
Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
Ceramide AP
Water, Glycerin, Alcohol Denat., Glycine Soja Oil, Isononyl Isononanoate, Pentylene Glycol, Dicaprylyl Ether, Propylene Glycol, PEG-6 Caprylic/Capric Glycerides, PPG-6-Decyltetradeceth-30, Dicaprylyl Carbonate, Glyceryl Isostearate, Sodium Hyaluronate, Retinol, Ammonium Polyacryloyldimethyl Taurate, Caprylyl Glycol, Citric Acid, Trisodium Ethylenediamine Disuccinate, Xanthan Gum, Butylene Glycol, Tocopherol, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Ceramide AP
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Alternatives
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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.
Caprylyl 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).
Dicaprylyl Carbonate comes from carbonic acid and caprylyl alcohol, a fatty alcohol. It is an emollient and gives skin a velvet feel. The sources of Dicaprylyl Carbonate may be synthetic or from animals.
As an emollient, Dicaprylyl Carbonate creates a film on the skin. This film traps moisture in, keeping your skin soft and hydrated.
Glycerin (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.
Glycine Soja Oil is a plant-derived oil from soybean seeds. Like other oils, it is rich in essential fatty acids (mostly linoleic and oleic) that support skin hydration and barrier function.
The fatty acids are able to integrate into the lipid matrix of the stratum corneum to help soften skin and reduce water loss.
On top of that, soybean oil is rich in vitamins like vitamin E, a potent antioxidant.
Research on soybean's active components also point to anti-inflammatory, collagen-stimulating, antioxidant activity, and protection against UV-induced oxidative damage.
Most of this research applies to the broader soybean plant and not just the oil fraction alone.
This ingredient may not be fungal acne safe due to the oleic acid content.
Tocopherol 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.
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. Remember to stay hydrated!