Nioxin Hair Fall Defense Shampoo Versus K18 Hair PEPTIDE PREP™ Clarifying Detox Shampoo
Updated on November 01, 2024
Overview
What they are
These products are both shampoos. They have a total of 6 ingredients in common
Cool Features
They both contain BHA
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 silicones
What's Inside
They both contain common allergens and 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
Nioxin Hair Fall Defense Shampoo 25 ingredients
K18 Hair PEPTIDE PREP™ Clarifying Detox Shampoo 18 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
Nioxin Hair Fall Defense Shampoo 25 ingredients
K18 Hair PEPTIDE PREP™ Clarifying Detox Shampoo 18 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningSodium Laureth Sulfate
Cleansing
Sodium Lauryl Sulfate
Cleansing
Cocamidopropyl Betaine
Cleansing
Caffeine
Skin Conditioning
Sandalore
Sodium Benzoate
Masking
Citric Acid
Buffering
Mentha Arvensis Leaf Oil
Masking
Panthenol
Skin Conditioning
Salicylic Acid
Masking
Lauric Acid
Cleansing
Niacinamide
Smoothing
Trisodium Ethylenediamine Disuccinate
Methylparaben
Preservative
Polyquaternium-10
Mentha Piperita Oil
Masking
Sodium Hydroxide
BufferingLimonene
Perfuming
Biotin
AntiseborrhoeicAlcohol
Antimicrobial
Tocopherol
Antioxidant
Sodium Citrate
BufferingSodium Chloride
Masking
Sodium Xylenesulfonate
Water, Sodium Laureth Sulfate, Sodium Lauryl Sulfate, Cocamidopropyl Betaine, Caffeine, Sandalore, Sodium Benzoate, Citric Acid, Mentha Arvensis Leaf Oil, Panthenol, Salicylic Acid, Lauric Acid, Niacinamide, Trisodium Ethylenediamine Disuccinate, Methylparaben, Polyquaternium-10, Mentha Piperita Oil, Sodium Hydroxide, Limonene, Biotin, Alcohol, Tocopherol, Sodium Citrate, Sodium Chloride, Sodium Xylenesulfonate
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
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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 WaterCitric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
As an AHA, Citric Acid removes the top layer of skin cells from the newer layer of skin underneath. This helps skin to remove dark spots and even out skin tone.
If you spot Citric Acid near the end of an ingredient list, it's likely there as a pH adjuster rather than an active ingredient.
Read more about some other popular AHA's here:
Learn more about Citric AcidPanthenol 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 one of the most well-known ingredients for treating skin that struggles with blackheads and acne. It helps to exfoliate both the skin's surface and pores, and also acts as an anti-inflammatory agent.
This multitasking property makes it a great ingredient for cleaning out pores, controlling oil production, and reducing inflammation.
Unlike AHAs which are water soluble, Salicylic Acid is oil soluble. This means that it's able to exfoliate the inside of pores and reduce blackheads.
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 a Salicylic Acid into your routine.
In general, Salicylic Acid is a great ingredient for oily acne-prone skin.
While salicylic acid does not increase sun-sensitivity, we still recommend wearing SPF.
If you are looking for the ingredient called BHA or Butylated Hydroxyanisole, click here.
Learn more about Salicylic AcidSodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.
In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline.
Your skin has a natural pH and acid mantle. This acid mantle helps prevent harmful bacteria from breaking through. The acid mantle also helps keep your skin hydrated.
"Alkaline" refers to a high pH level. A low pH level would be considered acidic.
Learn more about Sodium HydroxideLimonene 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.
Learn more about LimoneneIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Nioxin Hair Fall Defense Shampoo 25 ingredients
K18 Hair PEPTIDE PREP™ Clarifying Detox Shampoo 18 ingredients
Reviews
Here's what our community thinks
Nioxin Hair Fall Defense Shampoo 25 ingredients
K18 Hair PEPTIDE PREP™ Clarifying Detox Shampoo 18 ingredients
Deep cleanses without stripping. If you can find a pump bottle meant for the pros, it’s much better value and should last at least a year.
There are some clear pros and cons here.
Pros
•good for oily scalp.
•gets rid off excess sebum
•doesn't clog pores
Cons
•bottle is made out of very hard plastic that makes squeezing out product super hard.
•dries the ends
•mega expensive, especially for 250ml
•getting the product spread through the scalp is very tough without using a lot of it. Using a different shampoo first is Show more
