Here's our complete breakdown comparing the ingredients, attributes, and more of Hydropeptide Firma-Bright 20% Vitamin C Booster versus Kiehl's Powerful-Strength Vitamin C Serum .
Published on March 17, 2024
Overview
What they are
These products are both reef safe serums. They have a total of 1 ingredients in common
Cool Features
They both contain hyaluronic acid and Vitamin C
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin, scar healing, dark spots and better texture
Free From
They both do not contain any harsh alcohols, parabens or sulfates
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that need an update? Let us know.
Price
Ingredient Info
Hydropeptide Firma-Bright 20% Vitamin C Booster 26 ingredients
Kiehl's Powerful-Strength Vitamin C Serum 21 ingredients
Alcohol Free
This product is free of harsh alcohols 🎉
Silicon Free
This product is free of silicons 🎉
Fragrance Free
This product is free of fragrances 🎉
Sulfate Free
This product is free of sulfates 🎉
Paraben Free
This product is free of parabens 🎉
Oil Free
This product is free of oils 🎉
Not Malassezia Safe
Ingredients in this product that are not malassezia safe:
Reef Safe
This product is free of ingredients that damage reefs 🎉
EU Allergen Free
This product is free of EU allergens 🎉
Non Vegan
This product is not vegan 😥
Not Cruelty Free
This product is not cruelty-free 😥
Alcohol Free
This product is free of harsh alcohols 🎉
Contains Silicon
Ingredients in this product that are types of silicon:
Contains Fragrance
Ingredients in this product that are forms of fragrance:
Sulfate Free
This product is free of sulfates 🎉
Paraben Free
This product is free of parabens 🎉
Contains Oils
Ingredients in this product that are types of oil:
Not Malassezia Safe
Ingredients in this product that are not malassezia safe:
Reef Safe
This product is free of ingredients that damage reefs 🎉
Contains EU Allergens
Ingredients in this product that are EU allergens:
Non Vegan
This product is not vegan 😥
Not Cruelty Free
This product is not cruelty-free 😥
At a glance
Click on any of the items below to learn more
Hydropeptide Firma-Bright 20% Vitamin C Booster 26 ingredients
Kiehl's Powerful-Strength Vitamin C Serum 21 ingredients
Notable Ingredients
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
Benefits
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 3 ingredients that may have this attribute:
Concerns
This product contains 1 ingredient that may have this attribute:
Notable Ingredients
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
Benefits
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 3 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 3 ingredients that may have this attribute:
This product contains 3 ingredients that may have this attribute:
Concerns
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
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Join SkinSortIngredients Compared
Ingredients that are highlighted in purple are present in both products.
Hydropeptide Firma-Bright 20% Vitamin C Booster 26 ingredients
Kiehl's Powerful-Strength Vitamin C Serum 21 ingredients
Water • Sodium Ascorbyl Phosphate • Pentylene Glycol • Glycerin • Niacinamide • Propanediol • Carrageenan • Erythritol • Sodium PCA • Xanthan Gum • 1,2-Hexanediol • Hydroxyacetophenone • Acetyl Hexapeptide-8 • Caprylyl Glycol • Disodium Phosphate • Sodium Phosphate • Sodium Hyaluronate • Anogeissus Leiocarpus Bark Extract • Sodium Phytate • Hydrangea Arborescens Root Extract • Morus Alba Root Extract • Polysorbate 20 • Resveratrol • Scutellaria Lateriflora Extract • Pentapeptide-21 • Avena Sativa Kernel Extract
Propylene Glycol • Dimethicone • Glycerin • Ascorbic Acid • Ethylhexyl Palmitate • Cetyl Peg/Ppg-10/1 Dimethicone • Dimethicone Crosspolymer • Ascorbyl Glucoside • Cyclohexasiloxane • Hydroxyethylpiperazine Ethane Sulfonic Acid • Lauroyl Lysine • Acrylonitrile/Methyl Methacrylate/Vinylidene Chloride Copolymer • Polysilicone-11 • Adenosine • Hydrolyzed Hyaluronic Acid • Limonene • Isobutane • Citrus Aurantium Dulcis Peel Oil • Citrus Limon Peel Oil • Citral • Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
Ingredients Side-by-side
Ingredients that are highlighted in purple are present in both products.
Learn more about what what Com. / Irr. ratings are
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.
As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.
Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.
Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.
In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.
This ingredient is organic, colorless, odorless, and non-toxic.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Learn more about GlycerinHydropeptide Firma-Bright 20% Vitamin C Booster contains this as ingredient number 4.
Kiehl's Powerful-Strength Vitamin C Serum contains this as ingredient number 3.
Here's what our community thinks of the ingredients in these two products.
Hydropeptide Firma-Bright 20% Vitamin C Booster 26 ingredients
Kiehl's Powerful-Strength Vitamin C Serum 21 ingredients
Usage
Here's some more info on how this product is used by our community.
When to use
Hydropeptide Firma-Bright 20% Vitamin C Booster 26 ingredients
Kiehl's Powerful-Strength Vitamin C Serum 21 ingredients
Alternatives
Our Dupe Finder has found 50 potential alternatives that have similar ingredients to Hydropeptide Firma-Bright 20% Vitamin C Booster.
See 50 alternativesOur Dupe Finder has found 7 potential alternatives that have similar ingredients to Kiehl's Powerful-Strength Vitamin C Serum.
See 7 alternatives