Kiehl's Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum Versus The Ordinary GF 15% Solution
Updated on January 08, 2025
Overview
What they are
These products are both fungal acne (malassezia) safe and reef safe serums. They have a total of 5 ingredients in common
Suited For
They're both likely to be good for dry skin and brightening skin
Free From
They both do not contain any harsh alcohols, common allergens, fragrances, oils, parabens, silicones or sulfates
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
Kiehl's Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum 7 ingredients
The Ordinary GF 15% Solution 12 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
Kiehl's Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum 7 ingredients
The Ordinary GF 15% Solution 12 ingredients
Benefits
Benefits
Ingredients Side-by-side
Water
Skin ConditioningButylene Glycol
Humectant
Nicotiana Benthamiana Hexapeptide-40 Sh-Oligopeptide-1
Skin Conditioning
Nicotiana Benthamiana Hexapeptide-40 Sh-Polypeptide-76
Skin Conditioning
Nicotiana Benthamiana Octapeptide-30 Sh-Oligopeptide-2
Skin Conditioning
Water, Butylene Glycol, Nicotiana Benthamiana Hexapeptide-40 Sh-Oligopeptide-1, Nicotiana Benthamiana Hexapeptide-40 Sh-Polypeptide-76, Nicotiana Benthamiana Octapeptide-30 Sh-Oligopeptide-2, Sclerotium Gum, Glycerin, Trisodium Ethylenediamine Disuccinate, Citric Acid, Sodium Citrate, Phenoxyethanol, Chlorphenesin
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 WaterGlycerin 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 GlycerinPhenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.
It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.
Chlorphenesin is a synthetic preservative. It helps protect a product against bacteria in order to extend shelf life. In most cases, Chlorphenesin is paired with other preservatives such as phenoxyethanol and caprylyl glycol.
Chlorphenesin is a biocide. This means it is able to help fight the microorganisms on our skin. It is also able to fight odor-releasing bacteria.
Chlorphenesin is soluble in both water and glycerin.
Studies show Chlorphenesin is easily absorbed by our skin. You should speak with a skincare professional if you have concerns about using Chlorphenesin.
Learn more about ChlorphenesinCitric 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 AcidIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Kiehl's Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum 7 ingredients
The Ordinary GF 15% Solution 12 ingredients
Reviews
Here's what our community thinks
Kiehl's Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum 7 ingredients
Best one I’ve tried so far! Hydrating, absorbs well, and lets other serums through.
The Ordinary GF 15% Solution 12 ingredients
This product does deliver soothing and plumping effects, but I feel it's creating another unnecessary step in an already big skincare routine.
Skintype: 25yr old acne prone - combination/sensitive - target anti-ageing
The consistency is really runny/watery, yet it absorbs quickly. At first I saw zero results, but I do feel it does something and makes my skin a bit more plumped. However, I Show more
