Olaplex No. 4C Bond Maintenance Clarifying Shampoo Versus K18 Hair PEPTIDE PREP™ Clarifying Detox Shampoo

Olaplex No. 4C Bond Maintenance Clarifying Shampoo Versus K18 Hair PEPTIDE PREP™ Clarifying Detox Shampoo Detailed comparison of Olaplex No. 4C Bond Maintenance Clarifying Shampoo versus K18 Hair PEPTIDE PREP™ Clarifying Detox Shampoo. No key ingredients Water Sodium Lauroyl Methyl Isethionate Cocamidopropyl Hydroxysultaine Sodium Lauroyl Glutamate Coco-Betaine Disodium Laureth Sulfosuccinate Acrylates Copolymer Cocamidopropyl Betaine Cocamidopropylamine Oxide Sodium Methyl Oleoyl Taurate Decyl Glucoside Bis-Aminopropyl Diglycol Dimaleate Sodium Lauryl Sulfoacetate Phenoxyethanol Coco-Glucoside Lauryl Glucoside Chlorphenesin Panthenol Trisodium Ethylenediamine Disuccinate Diethylhexyl Succinate Sodium Benzoate Polyquaternium-11 Benzoic Acid Sodium PCA Pentasodium Triphosphate Sodium Lactate Arginine Aspartic Acid PCA Citric Acid Glycine Alanine Serine Valine Isoleucine Proline Threonine Histidine Phenylalanine Parfum Citral Hexyl Cinnamal Limonene Water, Sodium Lauroyl Methyl Isethionate, Cocamidopropyl Hydroxysultaine, Sodium Lauroyl Glutamate, Coco-Betaine, Disodium Laureth Sulfosuccinate, Acrylates Copolymer, Cocamidopropyl Betaine, Cocamidopropylamine Oxide, Sodium Methyl Oleoyl Taurate, Decyl Glucoside, Bis-Aminopropyl Diglycol Dimaleate, Sodium Lauryl Sulfoacetate, Phenoxyethanol, Coco-Glucoside, Lauryl Glucoside, Chlorphenesin, Panthenol, Trisodium Ethylenediamine Disuccinate, Diethylhexyl Succinate, Sodium Benzoate, Polyquaternium-11, Benzoic Acid, Sodium PCA, Pentasodium Triphosphate, Sodium Lactate, Arginine, Aspartic Acid, PCA, Citric Acid, Glycine, Alanine, Serine, Valine, Isoleucine, Proline, Threonine, Histidine, Phenylalanine, Parfum, Citral, Hexyl Cinnamal, Limonene Sodium C14-16 Olefin Sulfonate Salicylic Acid Charcoal Powder Sh-Oligopeptide-78 Glycerin Sodium Phytate Guar Hydroxypropyltrimonium Chloride Caprylyl Glycol Caprylhydroxamic Acid Potassium Hydroxide Sodium Hydroxide Benzyl Salicylate Water, Sodium C14-16 Olefin Sulfonate, Cocamidopropyl Hydroxysultaine, Salicylic Acid, Charcoal Powder, Sh-Oligopeptide-78, Panthenol, Glycerin, Sodium Phytate, Guar Hydroxypropyltrimonium Chloride, Caprylyl Glycol, Caprylhydroxamic Acid, Citric Acid, Potassium Hydroxide, Sodium Hydroxide, Parfum, Benzyl Salicylate, Limonene 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. Cocamidopropyl Hydroxysultaine is a synthetic cleansing agent, though it is derived from coconut oil. It is used to enhance the texture of products by boosting lather and thickening the texture. As a cleanser, Cocamidopropyl Hydroxysultaine is mild. 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 lavender and eucalyptus. The scent of limonene is generally described as "sweet citrus". Limonene acts as an antioxidant, meaning it helps neutralize free radicals. When exposed to air, oxidized limonene may sensitize the skin. Because of this, limonene is often avoided by people with sensitive skin. The term 'fragrance' is not regulated in many countries. In many cases, it is up to the brand to define this term. For instance, many brands choose to label themselves as "fragrance-free" because they are not using synthetic fragrances. However, their products may still contain ingredients such as essential oils that are considered a fragrance. Panthenol is a common ingredient that helps hydrate and soothe the skin. It is found naturally in our skin and hair. There are two forms of panthenol: D and L. D-panthenol is also known as dexpanthenol. Most cosmetics use dexpanthenol or a mixture of D and L-panthenol. Panthenol is famous due to its ability to go deeper into the skin's layers. Using this in