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Paula's Choice
Pro-Collagen Multi Peptide Booster

Versus

Medik8
Liquid Peptides

Product category and function

Pro-Collagen Multi Peptide Booster

Liquid Peptides

Serums/Treatments	Serums/Treatments
Concentrated formulas for hydrating and addressing skin issues.	Concentrated formulas for hydrating and addressing skin issues.
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Ingredient highlights

Pro-Collagen Multi Peptide Booster

Liquid Peptides

Ingredient info	Ingredient info
Alcohol-free Paraben-free SLS-free Mica-free Fragrance-free	Alcohol-free Paraben-free SLS-free Mica-free Fragrance-free vegan cruelty-free

Full ingredient list

Pro-Collagen Multi Peptide Booster

Liquid Peptides

No. of common ingredients = 0
Water, glycerin, pentylene glycol, hydrolyzed yeast extract, pyrus malus fruit extract, dimethicone, propanediol, 1,2-hexanediol, glyceryl glucoside, palmitoyl tetrapeptide-72 amide, sh-polypeptide-121, palmitoyl dipeptide-5 diaminobutyroyl hydroxythreonine, palmitoyl tripeptide-5, tridecapeptide-1, tetradecyl aminobutyroylvalylaminobutyric urea acetate, polyglucuronic acid, sodium hyaluronate, c9-12 alkane, ammonium polyacryloyldimethyl taurate, polygonum bistorta root extract, bacillus ferment, lecithin, sodium phytate, coco-caprylate/caprate, hexylene glycol, cetyl hydroxyethylcellulose, xanthan gum, ethylhexylglycerin, caprylyl glycol, magnesium chloride, citric acid, potassium sorbate, sodium benzoate. 10	Water, glycerin, butylene glycol, inulin, sodium hyaluronate, panthenol, alpha-glucan oligosaccharide, carnosine, carbomer, polysorbate 20, caprylyl glycol, phenoxyethanol, hydroxypropyl cyclodextrin, dunaliella salina extract, ethylhexylglycerin, citric acid, palmitoyl tripeptide-5, sodium benzoate, acetyl hexapeptide-8, tetrapeptide-21, pentapeptide-18, palmitoyl tripeptide-1, pantolactone, palmitoyl tripeptide-38, palmitoyl tetrapeptide-7, glyceryl caprylate, lactic acid/glycolic acid copolymer, polyvinyl alcohol, phenylpropanol, copper palmitoyl heptapeptide-14, heptapeptide-15 palmitate, potassium sorbate, xanthan gum

No. of common ingredients = 0

Total Number of ingredients = 33

Water, glycerin, pentylene glycol, hydrolyzed yeast extract, pyrus malus fruit extract, dimethicone, propanediol, 1,2-hexanediol, glyceryl glucoside, palmitoyl tetrapeptide-72 amide, sh-polypeptide-121, palmitoyl dipeptide-5 diaminobutyroyl hydroxythreonine, palmitoyl tripeptide-5, tridecapeptide-1, tetradecyl aminobutyroylvalylaminobutyric urea acetate, polyglucuronic acid, sodium hyaluronate, c9-12 alkane, ammonium polyacryloyldimethyl taurate, polygonum bistorta root extract, bacillus ferment, lecithin, sodium phytate, coco-caprylate/caprate, hexylene glycol, cetyl hydroxyethylcellulose, xanthan gum, ethylhexylglycerin, caprylyl glycol, magnesium chloride, citric acid, potassium sorbate, sodium benzoate.

Water, glycerin, butylene glycol, inulin, sodium hyaluronate, panthenol, alpha-glucan oligosaccharide, carnosine, carbomer, polysorbate 20, caprylyl glycol, phenoxyethanol, hydroxypropyl cyclodextrin, dunaliella salina extract, ethylhexylglycerin, citric acid, palmitoyl tripeptide-5, sodium benzoate, acetyl hexapeptide-8, tetrapeptide-21, pentapeptide-18, palmitoyl tripeptide-1, pantolactone, palmitoyl tripeptide-38, palmitoyl tetrapeptide-7, glyceryl caprylate, lactic acid/glycolic acid copolymer, polyvinyl alcohol, phenylpropanol, copper palmitoyl heptapeptide-14, heptapeptide-15 palmitate, potassium sorbate, xanthan gum

Notable ingredients

Pro-Collagen Multi Peptide Booster

Liquid Peptides

Solvent: Water, 1,2-hexanediol, C9-12 alkane, Glycerin, Hexylene glycol, Propanediol, Pentylene glycol

Buffering: Citric acid

Chelating: Citric acid, Sodium phytate

Soothing: Panthenol

Cell-signaling ingredient: Palmitoyl tetrapeptide-7

Solvent: Water, Butylene glycol, Glycerin, Phenylpropanol

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Ingredients with their functions

Pro-Collagen Multi Peptide Booster

Liquid Peptides

Water

Also-called: Aqua, Aqua/Water, Water/Aqua/Eau, Aqua/Water/Eau | Function: Skin conditioning, Solvent

Water serves as a fundamental component in skincare products, often listed as the first ingredient, which means it's the most abundant. It acts as a solvent, helping to dissolve other ingredients and facilitate the application and absorption of products.

Glycerin

Also-called: Glycerol | Function: Skin-identical ingredient, Viscosity controlling, Skin protecting, Skin conditioning, Humectant/Moisturizer, Solvent