Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

reviv serums Ultimate Serum Versus Medik8 Liquid Peptides

reviv serums Ultimate Serum Versus Medik8 Liquid Peptides Detailed comparison of reviv serums Ultimate Serum versus Medik8 Liquid Peptides. This anti-aging serum is formulated around Alpha-Arbutin and Palmitoyl Tripeptide-5 to soften the look of wrinkles and f

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reviv serums Ultimate Serum Versus Medik8 Liquid Peptides Detailed comparison of reviv serums Ultimate Serum versus Medik8 Liquid Peptides. This anti-aging serum is formulated around Alpha-Arbutin and Palmitoyl Tripeptide-5 to soften the look of wrinkles and fade the look of dark spots. This anti-aging serum is formulated around Carnosine and Palmitoyl Tripeptide-5 to soften the look of wrinkles and refine skin texture. Water Pentylene Glycol Hamamelis Virginiana Extract Glycerin Dimethyl Sulfone Human Umbilical Mesenchymal Stem Cell Exosomes Alpha-Arbutin Palmitoyl Tripeptide-5 Ergothioneine Dipalmitoyl Hydroxyproline Ubiquinone Saccharomyces Ferment Lysate Filtrate Tetrahexyldecyl Ascorbate Sh-Oligopeptide-1 Rh-Polypeptide-3 Sh-Polypeptide-9 Sh-Polypeptide-1 Sh-Polypeptide-11 Human Urine Derived Stem Cell Conditioned Media Glycereth-7 Triacetate Ethoxydiglycol Lactococcus Ferment Lysate Chlorella Vulgaris Extract Saccharide Isomerate Tripeptide-2 Dimer Tripeptide-43 Vitis Vinifera Flower Cell Extract Pyrus Malus Fruit Extract Hydroxyacetophenone Tocopheryl Acetate Propanediol Xanthan Gum Lecithin Pullulan Butylene Glycol Sodium Citrate Polysorbate 20 Tetradecyl Aminobutyroylvalylaminobutyric Urea Trifluoroacetate Palmitoyl Dipeptide-5 Diaminobutyroyl Hydroxythreonine Palmitoyl Tripeptide-1 Palmitoyl Tetrapeptide-7 Acetyl Hexapeptide-51 Amide Nannochloropsis Oculata Extract Centella Asiatica Extract Chondrus Crispus Extract Equisetum Arvense Extract Geranium Maculatum Extract Taraxacum Officinale Root Extract Achillea Millefolium Flower Extract Curcuma Longa Rhizome Extract Spirulina Platensis Extract Aloe Barbadensis Leaf Juice Cassia Angustifolia Seed Polysaccharide Simmondsia Chinensis Seed Oil Arginine Aspartic Acid Glycine Alanine Serine Valine Isoleucine Proline Threonine Histidine Phenylalanine PCA Sodium PCA Sodium Lactate Sodium Chloride Carbomer Alcohol Hydroxyethylcellulose Acrylates/C10-30 Alkyl Acrylate Crosspolymer Sodium Hydroxide Potassium Sorbate Sodium Benzoate Dextran Disodium EDTA Phenoxyethanol Ethylhexylglycerin Water, Pentylene Glycol, Hamamelis Virginiana Extract, Glycerin, Dimethyl Sulfone, Human Umbilical Mesenchymal Stem Cell Exosomes, Alpha-Arbutin, Palmitoyl Tripeptide-5, Ergothioneine, Dipalmitoyl Hydroxyproline, Ubiquinone, Saccharomyces Ferment Lysate Filtrate, Tetrahexyldecyl Ascorbate, Sh-Oligopeptide-1, Rh-Polypeptide-3, Sh-Polypeptide-9, Sh-Polypeptide-1, Sh-Polypeptide-11, Human Urine Derived Stem Cell Conditioned Media, Glycereth-7 Triacetate, Ethoxydiglycol, Lactococcus Ferment Lysate, Chlorella Vulgaris Extract, Saccharide Isomerate, Tripeptide-2, Dimer Tripeptide-43, Vitis Vinifera Flower Cell Extract, Pyrus Malus Fruit Extract, Hydroxyacetophenone, Tocopheryl Acetate, Propanediol, Xanthan Gum, Lecithin, Pullulan, Butylene Glycol, Sodium Citrate, Polysorbate 20, Tetradecyl Aminobutyroylvalylaminobutyric Urea Trifluoroacetate, Palmitoyl Dipeptide-5 Diaminobutyroyl Hydroxythreonine, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, Acetyl Hexapeptide-51 Amide, Nannochloropsis Oculata Extract, Centella Asiatica Extract, Chondrus Crispus Extract, Equisetum Arvense Extract, Geranium Maculatum Extract, Taraxacum Officinale Root Extract, Achillea Millefolium Flower Extract, Curcuma Longa Rhizome Extract, Spirulina Platensis Extract, Aloe Barbadensis Leaf Juice, Cassia Angustifolia Seed Polysaccharide, Simmondsia Chinensis Seed Be the first to review 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. Carbomer is a synthetic thickening and gelling agent. It's basically the ingredient that gives a lot of serums, gels, creams, and sunscreens their smooth, non-sticky texture. Although legally permitted at very high levels, carbomers are normally used at concentrations below 1%. It also needs to be neutralized to actually thicken, and because it is a large molecule, it doesn't really penetrate the skin barrier. Allergy-wise, the risk is very low. Clinical studies show carbomers have low potential for skin irritation/sensitization even at concentrations up to 100%. A 2024 UK study patch-tested 1,302 patients and found true allergy to the parent group of carbomer to be rare with no confirmed relevant reactions. 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. Palmitoyl Tetrapeptide-7 (formerly Palmitoyl Tetrapeptide-3) is a synthetic peptide. Its main job is to fight what researchers call "inflammaging". "Inflammaging" is the slow, low-grade chronic inflammation that quietly breaks down collagen as we age. This ingredient calms down a specific inflammation signal in your skin cells (called IL-6). When left unchecked, this signal triggers enzymes that break dow