Olaplex No.4 Bond Maintenance Shampoo Versus K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo

Olaplex No.4 Bond Maintenance Shampoo Versus K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo Detailed comparison of Olaplex No.4 Bond Maintenance Shampoo versus K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo. Water Sodium Lauroyl Methyl Isethionate Cocamidopropyl Hydroxysultaine Potassium Cocoyl Glycinate Disodium Cocoyl Glutamate Potassium Cocoate Sodium Lauroyl Sarcosinate Glycereth-26 Decyl Glucoside Parfum Phenoxyethanol Cocamidopropylamine Oxide Sodium Cocoyl Glutamate Glycol Distearate Disodium Laureth Sulfosuccinate Methyl Gluceth-20 Acrylates Copolymer PEG-120 Methyl Glucose Dioleate Amodimethicone Polyquaternium-10 Citric Acid Ethylhexylglycerin Sodium Lauryl Sulfoacetate Divinyldimethicone/Dimethicone Copolymer Chlorphenesin Polyquaternium-11 Guar Hydroxypropyltrimonium Chloride C11-15 Pareth-7 Trisodium Ethylenediamine Disuccinate Laureth-9 Glycerin Trideceth-12 Panthenol Hydrolyzed Vegetable Protein Pg-Propyl Silanetriol C12-13 Pareth-3 C12-13 Pareth-23 Helianthus Annuus Seed Oil Tocopherol Pseudozyma Epicola/Camellia Sinensis Seed Oil Ferment Extract Filtrate Pseudozyma Epicola/Argania Spinosa Kernel Oil Ferment Filtrate Prunus Armeniaca Kernel Oil Quaternium-95 Propanediol Helianthus Annuus Seed Extract PEG-8 Bis-Aminopropyl Diglycol Dimaleate Euterpe Oleracea Fruit Extract Rosmarinus Officinalis Leaf Extract Punica Granatum Extract Origanum Vulgare Leaf Extract Musa Sapientum Fruit Extract Morinda Citrifolia Fruit Extract Sodium Hyaluronate PEG-8/Smdi Copolymer Arctium Lappa Root Extract Sodium Polyacrylate Palmitoyl Myristyl Serinate Citral Hexyl Cinnamal Limonene Biotin Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate Water, Sodium Lauroyl Methyl Isethionate, Cocamidopropyl Hydroxysultaine, Potassium Cocoyl Glycinate, Disodium Cocoyl Glutamate, Potassium Cocoate, Sodium Lauroyl Sarcosinate, Glycereth-26, Decyl Glucoside, Parfum, Phenoxyethanol, Cocamidopropylamine Oxide, Sodium Cocoyl Glutamate, Glycol Distearate, Disodium Laureth Sulfosuccinate, Methyl Gluceth-20, Acrylates Copolymer, PEG-120 Methyl Glucose Dioleate, Amodimethicone, Polyquaternium-10, Citric Acid, Ethylhexylglycerin, Sodium Lauryl Sulfoacetate, Divinyldimethicone/Dimethicone Copolymer, Chlorphenesin, Polyquaternium-11, Guar Hydroxypropyltrimonium Chloride, C11-15 Pareth-7, Trisodium Ethylenediamine Disuccinate, Laureth-9, Glycerin, Trideceth-12, Panthenol, Hydrolyzed Vegetable Protein Pg-Propyl Silanetriol, C12-13 Pareth-3, C12-13 Pareth-23, Helianthus Annuus Seed Oil, Tocopherol, Pseudozyma Epicola/Camellia Sinensis Seed Oil Ferment Extract Filtrate, Pseudozyma Epicola/Argania Spinosa Kernel Oil Ferment Filtrate, Prunus Armeniaca Kernel Oil, Quaternium-95, Propanediol, Helianthus Annuus Seed Extract, PEG-8, Bis-Aminopropyl Diglycol Dimaleate, Euterpe Oleracea Fruit Extract, Rosmarinus Officinalis Leaf Extract, Punica Granatum Extract, Origanum Vulgare Leaf Extract, Musa Sapientum Fruit Extract, Morinda Citrifolia Fruit Extract, Sodium Hyaluronate, PEG-8/Smdi Copolymer, Arctium Lappa Root Extract, Sodium Polyacrylate, Palmitoyl Myristyl Serinate, Citral, Hexyl Cinnamal, Limonene, Biotin, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate Sodium C14-16 Olefi 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. Citric Acid is an alpha hydroxy acid (AHA) naturally found in citrus fruits like oranges, lemons, and limes. Like other AHAs, citric acid can exfoliate skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath. However, this exfoliating effect only happens at high concentrations (20%) which can be hard to find in cosmetic products. Due to this, citric acid is usually included in small amounts as a pH adjuster. This helps keep products slightly more acidic and compatible with skin's natural pH. In skincare formulas, citric acid can: While it can provide some skin benefits, research shows lactic acid and glycolic acid are generally more effective and less irritating exfoliants. Most citric acid used in skincare today is made by fermenting sugars (usually from molasses). This synthetic version is identical to the natural citrus form but easier to stabilize and use in formulations. Rosacea skin has a lower threshold for acids generally, with 62.5% of rosacea subjects in one study reacting to lactic acid in a sting test. This is why we mark citric acid as a potential rosacea trigger. However, this ingredient shows up as a pH adjuster or chelator at roughly 0.1-1% in many products. These low levels are unlikely to be an issue for rosacea skin and becomes a potential trigger at exfoliating concentrations (20%). Because everybody's skin is unique, we recommend a patch test if you are unsure. 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. This ingredient is derived from guar gum. It is a skin conditioning agent that creates a thin, breathable film to reduce water loss during cleansing. This leaves the skin feeling soft rather than stripped and also contributes to a creamier lather. Due to the large molecule size, this ingredient is unlikely to penetrate skin. Limonene is a fragrance that adds scent and taste to a formulation. It's found in the peel oil of citrus fruits and other plants such as laven