K18 Hair PEPTIDE PREP™ Clarifying Detox Shampoo Versus Sunday Riley Clean Rinse Clarifying Scalp Serum
Updated on May 29, 2025
Overview
What they are
These products are both vegan, cruelty-free, and reef safe . They have a total of 4 ingredients in common
Cool Features
They both contain BHA and exfoliants
Suited For
They're both likely to be good for fighting acne, dry skin, brightening skin, sensitive skin, oily skin, reducing pores and scar healing
Free From
They both do not contain any oils, parabens, silicones or sulfates
What's Inside
They both contain fragrances
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
K18 Hair PEPTIDE PREP™ Clarifying Detox Shampoo 18 ingredients
Sunday Riley Clean Rinse Clarifying Scalp Serum 43 ingredients
What's inside (and what isn't)
What's inside (and what isn't)
At a glance
Click on any of the items below to learn more
K18 Hair PEPTIDE PREP™ Clarifying Detox Shampoo 18 ingredients
Sunday Riley Clean Rinse Clarifying Scalp Serum 43 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningSodium C14-16 Olefin Sulfonate
Cleansing
Cocamidopropyl Hydroxysultaine
CleansingSalicylic Acid
Masking
Charcoal Powder
Abrasive
Sh-Oligopeptide-78
Panthenol
Skin Conditioning
Glycerin
Humectant
Sodium Phytate
Guar Hydroxypropyltrimonium Chloride
Skin ConditioningCaprylyl Glycol
EmollientCaprylhydroxamic Acid
Citric Acid
Buffering
Potassium Hydroxide
BufferingSodium Hydroxide
BufferingParfum
Masking
Benzyl Salicylate
Perfuming
Limonene
Perfuming
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
Water
Skin ConditioningPropanediol
Solvent
Glycolipids
Skin ConditioningPEG-7 Glyceryl Cocoate
Emulsifying
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingQuaternium-80
Polysorbate 20
Emulsifying
Zinc PCA
Humectant
Kaolin
Abrasive
Menthyl Nicotinate
HumectantGlycolic Acid
Buffering
Cocamidopropyl Dimethylamine
EmulsifyingPentylene Glycol
Skin ConditioningUrea
Buffering
Niacinamide
Smoothing
Linoleic Acid
Cleansing
Linolenic Acid
Cleansing
Hamamelis Virginiana Water
Astringent
Sodium Lactate
BufferingSodium PCA
Humectant
Panthenol
Skin Conditioning
Propylene Glycol
Humectant
Salicylic Acid
Masking
CI 77891
Cosmetic ColorantSodium Starch Octenylsuccinate
AbsorbentCalcium Pantothenate
Maltodextrin
Absorbent
Sodium Benzoate
Masking
Jasminum Sambac Flower Extract
Masking
Potassium Sorbate
Preservative
Sodium Phytate
Sodium Ascorbyl Phosphate
Antioxidant
Rosa Damascena Flower Extract
MaskingTocopheryl Acetate
Antioxidant
Pyridoxine Hcl
Skin ConditioningAlcohol
Antimicrobial
Glycine
Buffering
Fructose
Humectant
Inositol
Humectant
Lactic Acid
Buffering
Bisabolol
Masking
Silica
Abrasive
Synthetic Fluorphlogopite
Water, Propanediol, Glycolipids, PEG-7 Glyceryl Cocoate, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Quaternium-80, Polysorbate 20, Zinc PCA, Kaolin, Menthyl Nicotinate, Glycolic Acid, Cocamidopropyl Dimethylamine, Pentylene Glycol, Urea, Niacinamide, Linoleic Acid, Linolenic Acid, Hamamelis Virginiana Water, Sodium Lactate, Sodium PCA, Panthenol, Propylene Glycol, Salicylic Acid, CI 77891, Sodium Starch Octenylsuccinate, Calcium Pantothenate, Maltodextrin, Sodium Benzoate, Jasminum Sambac Flower Extract, Potassium Sorbate, Sodium Phytate, Sodium Ascorbyl Phosphate, Rosa Damascena Flower Extract, Tocopheryl Acetate, Pyridoxine Hcl, Alcohol, Glycine, Fructose, Inositol, Lactic Acid, Bisabolol, Silica, Synthetic Fluorphlogopite
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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 ingredient has numerous pros (and no cons):
Like hyaluronic acid, panthenol is a humectant. Humectants are able to bind and hold large amounts of water to keep skin hydrated.
This ingredient works well for wound healing. It works by increasing tissue in the wound and helps close open wounds.
Once oxidized, panthenol converts to pantothenic acid. Panthothenic acid is found in all living cells.
This ingredient is also referred to as pro-vitamin B5.
Learn more about PanthenolSalicylic Acid (also known as beta hydroxy acid or BHA) is a well-known ingredient for treating skin that struggles with acne and clogged pores. It exfoliates both the skin's surface and deep within the pores to help clear out buildup, control oil, and reduce inflammation.
Unlike AHAs (alpha hydroxy acids), salicylic acid is oil-soluble. This allows it to penetrate into pores which makes it especially effective for treating blackheads and preventing future breakouts.
Salicylic acid is also known for its soothing properties. It has a similar structure to aspirin and can calm inflamed or irritated skin, making it a good option for acne-prone skin that is also sensitive.
Concentrations of 0.5-2% are recognized by the U.S. FDA as an over-the-counter topical acne product.
It can cause irritation and/or dryness if one's skin already has a compromised moisture barrier, so it's best to focus on repairing that before introducing this ingredient into your routine.
While salicylic acid does not increase sun sensitivity, it’s still important to wear sunscreen daily to protect your skin.
If you are looking for the ingredient called BHA or Butylated Hydroxyanisole, click here.
Learn more about Salicylic AcidSodium Phytate is the synthetic salt form of phytic acid. Phytic acid is an antioxidant and can be found in plant seeds.
Sodium Phytate is a chelating agent. Chelating agents help prevent metals from binding to water. This helps stabilize the ingredients and the product.
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. Stay hydrated!
Learn more about WaterIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
K18 Hair PEPTIDE PREP™ Clarifying Detox Shampoo 18 ingredients
Sunday Riley Clean Rinse Clarifying Scalp Serum 43 ingredients
Reviews
Here's what our community thinks
