Skin science article
Paula's Choice Peptide Booster Versus Skintific 5X Ceramide Serum
Paula's Choice Peptide Booster Versus Skintific 5X Ceramide Serum This anti-aging treatment is formulated around Tripeptide-1 and Palmitoyl Tripeptide-1 to soften the look of wrinkles and refine skin texture. This barrier-repair serum is formulated around Bifi
Paula's Choice Peptide Booster Versus Skintific 5X Ceramide Serum
This anti-aging treatment is formulated around Tripeptide-1 and Palmitoyl Tripeptide-1 to soften the look of wrinkles and refine skin texture.
This barrier-repair serum is formulated around Bifida Ferment Lysate and Niacinamide to strengthen the skin barrier and calm redness.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Glycerin
PEG-8 Dimethicone
Tripeptide-1
Palmitoyl Tripeptide-1
Palmitoyl Tetrapeptide-7
Palmitoyl Hexapeptide-12
Myristoyl Hexapeptide-16
Myristoyl Pentapeptide-17
Hexanoyl Dipeptide-3 Norleucine Acetate
Azelaoyl Bis-Dipeptide-10
Glycoproteins
Phospholipids
Adenosine
Dipotassium Glycyrrhizate
Arginine
Valine
Glycine
Alanine
Glutamic Acid
Serine
Threonine
Yeast Extract
Isoleucine
Proline
Histidine
Phenylalanine
PCA
Phytic Acid
Panax Ginseng Root Extract
Sodium PCA
Psidium Guajava Fruit Extract
Euterpe Oleracea Fruit Extract
Ahnfeltiopsis Concinna Extract
Dextran
Hydrolyzed Silk
Lecithin
Glyceryl Polymethacrylate
C12-16 Pareth-9
Trideceth-12
Sodium Lactate
Carbomer
Aspartic Acid
Polysorbate 20
Butylene Glycol
Caprylyl Glycol
PEG-8
C11-15 Pareth-7
Guar Hydroxypropyltrimonium Chloride
Phytosteryl/Octyldodecyl Lauroyl Glutamate
Ectoin
Citrate Buffer
Trimethylsiloxyamodimethicone
Phenoxyethanol
Sodium Hydroxide
Ethylhexylglycerin
Water, Glycerin, PEG-8 Dimethicone, Tripeptide-1, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, Palmitoyl Hexapeptide-12, Myristoyl Hexapeptide-16, Myristoyl Pentapeptide-17, Hexanoyl Dipeptide-3 Norleucine Acetate, Azelaoyl Bis-Dipeptide-10, Glycoproteins, Phospholipids, Adenosine, Dipotassium Glycyrrhizate, Arginine, Valine, Glycine, Alanine, Glutamic Acid, Serine, Threonine, Yeast Extract, Isoleucine, Proline, Histidine, Phenylalanine, PCA, Phytic Acid, Panax Ginseng Root Extract, Sodium PCA, Psidium Guajava Fruit Extract, Euterpe Oleracea Fruit Extract, Ahnfeltiopsis Concinna Extract, Dextran, Hydrolyzed Silk, Lecithin, Glyceryl Polymethacrylate, C12-16 Pareth-9, Trideceth-12, Sodium Lactate, Carbomer, Aspartic Acid, Polysorbate 20, Butylene Glycol, Caprylyl Glycol, PEG-8, C11-15 Pareth-7, Guar Hydroxypropyltrimonium Chloride, Phytosteryl/Octyldodecyl Lauroyl Glutamate, Ectoin, Citrate Buffer, Trimethylsiloxyamodimethicone, Phenoxyethanol, Sodium Hydroxide, Ethylhexylglycerin
Methylpropanediol
Bifida Ferment Lysate
Niacinamide
Dimethicone
Pentylene Glycol
Dipropylene Glycol
Glycereth-26
Centella Asiatica Extract
Propylene Glycol
Maris Aqua
Ceramide NP
Panthenol
Ceramide Ns
Ceramide Ng
Ceramide As
Ceramide EOP
Ceramide AP
Sodium Hyaluronate
PEG-60 Hydrogenated Castor Oil
Hydroxyethyl Urea
Bis-PEG-18 Methyl Ether Dimethyl Silane
4-T-Butylcyclohexanol
Ubiquinone
PEG-10 Dimethicone
Isononyl Isononanoate
Ammonium Acryloyldimethyltaurate/Beheneth-25 Methacrylate Crosspolymer
Bisabolol
Ammonium Polyacryloyldimethyl Taurate
Tocopherol
Lactobacillus/Soymilk Ferment Filtrate
Hydrogenated Lecithin
Hamamelis Virginiana Extract
Zingiber Officinale Root Extract
1,2-Hexanediol
Polyacrylate Crosspolymer-6
C12-20 Alkyl Glucoside
O-Cymen-5-Ol
Hydroxyacetophenone
Dimethiconol
Sodium Polyacrylate
Glucose
Water, Methylpropanediol, Bifida Ferment Lysate, Glycerin, Niacinamide, Dimethicone, Pentylene Glycol, Dipropylene Glycol, Glycereth-26, Centella Asiatica Extract, Propylene Glycol, Maris Aqua, Ceramide NP, Panthenol, Ceramide Ns, Ceramide Ng, Ceramide As, Ceramide EOP, Ceramide AP, Sodium Hyaluronate, PEG-60 Hydrogenated Castor Oil, Hydroxyethyl Urea, Bis-PEG-18 Methyl Ether Dimethyl Silane, 4-T-Butylcyclohexanol, Ubiquinone, PEG-10 Dimethicone, Isononyl Isononanoate, Ammonium Acryloyldimethyltaurate/Beheneth-25 Methacrylate Crosspolymer, Bisabolol, Ectoin, Ammonium Polyacryloyldimethyl Taurate, Tocopherol, Lactobacillus/Soymilk Ferment Filtrate, Hydrogenated Lecithin, Hamamelis Virginiana Extract, Zingiber Officinale Root Extract, 1,2-Hexanediol, Polyacrylate Crosspolymer-6, C12-20 Alkyl Glucoside, O-Cymen-5-Ol, Hydroxyacetophenone, Dimethiconol, Sodium Polyacrylate, Glucose
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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.
Ectoin is a compound found naturally in some species of bacteria. It can be synthetically created for skincare use.
This ingredient is an osmolyte; Osmolytes help organisms survive osmotic shock (it protects them from extreme conditions). It does this by influencing the properties of biological fluids within cells.
When applied to the skin, ectoin helps bind water molecules to protect our skin. The water forms a sort of armor for the parts of our skin cells, enzymes, proteins, and more.
Besides this, ectoin has many uses in skincare:
A study from 2004 found ectoin to counteract the damage from UV-A exposure at different cell levels. It has also been shown to protect skin against both UV-A, UV-B rays, infrared light, and visible light.
Studies show ectoin to have dual-action pollution protection: first, it protects our skin from further pollution damage. Second, it helps repair damage from pollution.
In fact, ectoin has been shown to help with:
Fun fact: In the EU, ectoin is used in inhalation medication as an anti-pollution ingredient.
Ectoin is a highly stable ingredient. It has a wide pH range of 1-9. Light, oxygen, and temperature do not affect this ingredient.
The chemical name for this ingredient is Tetrahydromethylpyrimidine Carboxylic Acid.
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.
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!