Skin science article
Peach & Lily Retinal for All Renewing Serum Versus Paula's Choice 1% Retinol Treatment
Peach & Lily Retinal for All Renewing Serum Versus Paula's Choice 1% Retinol Treatment This anti-aging serum is formulated around Ectoin and Ceramide NP to soften the look of wrinkles and refine skin texture. This anti-aging treatment is formulated around Reti
Peach & Lily Retinal for All Renewing Serum Versus Paula's Choice 1% Retinol Treatment
This anti-aging serum is formulated around Ectoin and Ceramide NP to soften the look of wrinkles and refine skin texture.
This anti-aging treatment is formulated around Retinol and Tetrahexyldecyl Ascorbate to soften the look of wrinkles and refine skin texture.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Caprylic/Capric Triglyceride
Cetearyl Alcohol
Butylene Glycol
Glycerin
Cyclodextrin
Sorbitan Stearate
Cetyl Ethylhexanoate
Daucus Carota Sativa Root Water
Camellia Japonica Flower Extract
Rubus Chamaemorus Seed Oil
Sodium Hyaluronate
Ectoin
Behenic Acid
Eclipta Prostrata Extract
Polyacrylate Crosspolymer-6
Bisabolol
Ceramide NP
Ceramide AP
Phytosphingosine
Cholesterol
Rhynchosia Nulubilis Seed Extract
Retinal
Lonicera Japonica Flower Extract
Dextrin
Polygonum Multiflorum Root Extract
Moringa Oleifera Seed Oil
Ceramide EOP
Polyacrylate-13
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Sesamum Indicum Seed Extract
Melia Azadirachta Leaf Extract
Gardenia Florida Fruit Extract
Lonicera Caprifolium Flower Extract
Hydrogenated Polyisobutene
Methylpropanediol
Potassium Sorbate
Sodium Cetearyl Sulfate
Polyglyceryl-6 Behenate
Glyceryl Caprylate
Hydroxyacetophenone
Phytosteryl/Octyldodecyl Lauroyl Glutamate
Sucrose Cocoate
Polyglyceryl-10 Laurate
Ethylhexyl Palmitate
Sorbitan Isostearate
Polyglyceryl-10 Stearate
Pentylene Glycol
1,2-Hexanediol
Triethyl Citrate
Tocopherol
Sodium Levulinate
Glyceryl Stearate
Sorbitan Olivate
Ethylhexylglycerin
Cetearyl Olivate
Propanediol
Water, Caprylic/Capric Triglyceride, Cetearyl Alcohol, Butylene Glycol, Glycerin, Cyclodextrin, Sorbitan Stearate, Cetyl Ethylhexanoate, Daucus Carota Sativa Root Water, Camellia Japonica Flower Extract, Rubus Chamaemorus Seed Oil, Sodium Hyaluronate, Ectoin, Behenic Acid, Eclipta Prostrata Extract, Polyacrylate Crosspolymer-6, Bisabolol, Ceramide NP, Ceramide AP, Phytosphingosine, Cholesterol, Rhynchosia Nulubilis Seed Extract, Retinal, Lonicera Japonica Flower Extract, Dextrin, Polygonum Multiflorum Root Extract, Moringa Oleifera Seed Oil, Ceramide EOP, Polyacrylate-13, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Sesamum Indicum Seed Extract, Melia Azadirachta Leaf Extract, Gardenia Florida Fruit Extract, Lonicera Caprifolium Flower Extract, Hydrogenated Polyisobutene, Methylpropanediol, Potassium Sorbate, Sodium Cetearyl Sulfate, Polyglyceryl-6 Behenate, Glyceryl Caprylate, Hydroxyacetophenone, Phytosteryl/Octyldodecyl Lauroyl Glutamate, Sucrose Cocoate, Polyglyceryl-10 Laurate, Ethylhexyl Palmitate, Sorbitan Isostearate, Polyglyceryl-10 Stearate, Pentylene Glycol, 1,2-Hexanediol, Triethyl Citrate, Tocopherol, Sodium Levulinate, Glyceryl Stearate, Sorbitan Olivate, Ethylhexylglycerin, Cetearyl Olivate, Propanediol
Dimethicone
Isononyl Isononanoate
Castor Isostearate Succinate
C12-15 Alkyl Benzoate
Dimethicone Crosspolymer
PEG-33
Polysorbate 20
Behenyl Alcohol
PEG-100 Stearate
Pentaerythrityl Tetraisostearate
Polymethylsilsesquioxane
Tetrahexyldecyl Ascorbate
Retinol
Ceramide Ng
Palmitoyl Tetrapeptide-7
Palmitoyl Hexapeptide-12
Dipotassium Glycyrrhizate
Glycyrrhiza Glabra Root Extract
Avena Sativa Kernel Extract
Arctium Lappa Seed Oil
Salix Alba Extract
Glycine Soja Sterols
Lecithin
Allantoin
Tocopheryl Acetate
Hydrolyzed Soy Protein
Sorbitan Laurate
Acetyl Dipeptide-1 Cetyl Ester
Disodium EDTA
Hydroxyethylcellulose
Palmitoyl Tripeptide-1
Sodium Hydroxide
Tribehenin
Caprylyl Glycol
PEG-75 Shea Butter Glycerides
PPG-12/Smdi Copolymer
PEG-10 Phytosterol
PEG-8 Dimethicone
PEG-14
Magnesium Aluminum Silicate
Arachidyl Glucoside
Arachidyl Alcohol
Sclerotium Gum
Carbomer
Phenoxyethanol
Benzoic Acid
Water, Dimethicone, Glycerin, Butylene Glycol, Isononyl Isononanoate, Castor Isostearate Succinate, Glyceryl Stearate, C12-15 Alkyl Benzoate, Dimethicone Crosspolymer, PEG-33, Polysorbate 20, Behenyl Alcohol, PEG-100 Stearate, Pentaerythrityl Tetraisostearate, Polymethylsilsesquioxane, Tetrahexyldecyl Ascorbate, Retinol, Ceramide Ng, Palmitoyl Tetrapeptide-7, Palmitoyl Hexapeptide-12, Sodium Hyaluronate, Dipotassium Glycyrrhizate, Glycyrrhiza Glabra Root Extract, Avena Sativa Kernel Extract, Arctium Lappa Seed Oil, Salix Alba Extract, Glycine Soja Sterols, Lecithin, Allantoin, Tocopheryl Acetate, Hydrolyzed Soy Protein, Sorbitan Laurate, Acetyl Dipeptide-1 Cetyl Ester, Disodium EDTA, Hydroxyethylcellulose, Palmitoyl Tripeptide-1, Sodium Hydroxide, Tribehenin, Caprylyl Glycol, Ethylhexylglycerin, Pentylene Glycol, PEG-75 Shea Butter Glycerides, PPG-12/Smdi Copolymer, PEG-10 Phytosterol, PEG-8 Dimethicone, PEG-14, Magnesium Aluminum Silicate, Arachidyl Glucoside, Arachidyl Alcohol, Sclerotium Gum, Carbomer, Phenoxyethanol, Benzoic Acid
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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.
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.
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.
Glyceryl Stearate is made by reacting glycerin with stearic acid (typically sourced from plant oils like palm or coconut). It's an emulsifier, emollient, and mild occlusive.
Emulsifiers help ingredients like oil and water stay mixed so your formula stays nicely blended and uniform in texture.
This ingredient is typically used in concentrations between 1-10%. Studies have found it to be non-sensitizing, non-phototoxic, and non-photoallergenic.
A close cousin of this ingredient is Glyceryl Stearate SE ("self-emulsifying"). This just has a small amount of sodium or potassium stearate added so it can emulsify without a co-emulsifier.
Since this ingredient is an ester of a C18 fatty acid, it may not be fungal acne safe. The Malassezia yeast can potentially metabolize within the C11-C24 range.
Fun fact: The human body also creates Glyceryl Stearate naturally.
Pentylene Glycol (1,2-pentanediol) is a multitasking little diol with three main roles in a formula:
Research on alkanediols (the family pentylene glycol belongs to) show they work by disrupting microbial cell membranes. This disruption helps the primary preservative system in a product work more effectively at lower doses.
On the safety side, the Cosmetic Ingredient Review Expert Panel has concluded this ingredient to be safe as used in current cosmetic practices + concentrations.
Typical use levels in a formula run about 1-5%.
Sodium 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.
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!