The Ordinary Alpha Arbutin 2% + HA Versus The Purest Solutions Brightening Serum Arbutin 2% + Hyaluronic Acid
Updated on March 07, 2025
Overview
What they are
These products are both cruelty-free and reef safe serums. They have a total of 5 ingredients in common
Suited For
They're both likely to be good for scar healing and dark spots
Free From
They both do not contain any 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
The Ordinary Alpha Arbutin 2% + HA 15 ingredients
The Purest Solutions Brightening Serum Arbutin 2% + Hyaluronic Acid 25 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
The Ordinary Alpha Arbutin 2% + HA 15 ingredients
The Purest Solutions Brightening Serum Arbutin 2% + Hyaluronic Acid 25 ingredients
Benefits
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningAlpha-Arbutin
Antioxidant
Phenethyl Alcohol
MaskingHydroxyethylcellulose
Emulsion StabilisingPropylene Glycol
Humectant
Aloe Barbadensis Leaf Juice Powder
Skin ConditioningTriethanolamine
Buffering1,2-Hexanediol
Skin ConditioningCitric Acid
Buffering
Glycerin
Humectant
Sodium Acetate
BufferingCitrus Grandis Peel Water
HumectantSodium PCA
HumectantIsopropyl Alcohol
Solvent
Pentylene Glycol
Skin ConditioningCellulose
AbsorbentErythritol
HumectantCarrageenan
Sodium Acetylated Hyaluronate
Humectant
Sodium Hyaluronate
Humectant
Xanthan Gum
EmulsifyingSodium Hyaluronate Crosspolymer
Humectant
Ethylhexylglycerin
Skin ConditioningHydrolyzed Sodium Hyaluronate
Skin ConditioningPhenoxyethanol
Preservative
Water, Alpha-Arbutin, Phenethyl Alcohol, Hydroxyethylcellulose, Propylene Glycol, Aloe Barbadensis Leaf Juice Powder, Triethanolamine, 1,2-Hexanediol, Citric Acid, Glycerin, Sodium Acetate, Citrus Grandis Peel Water, Sodium PCA, Isopropyl Alcohol, Pentylene Glycol, Cellulose, Erythritol, Carrageenan, Sodium Acetylated Hyaluronate, Sodium Hyaluronate, Xanthan Gum, Sodium Hyaluronate Crosspolymer, Ethylhexylglycerin, Hydrolyzed Sodium Hyaluronate, Phenoxyethanol
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 WaterAlpha-Arbutin is made from hydroquinone and glucose. It may also be derived from the fermentation of soybeans.
This ingredient an antioxidant, meaning it helps protect your skin cells against damage.
Studies show this ingredient helps improve hyperpigmentation and fade discoloration.
Alpha-Arbutin may be used with other ingredients that help with hyperpigmentation. These ingredients include retinol, Vitamin C, niacinamide, and tranexamic acid.
Learn more about Alpha-ArbutinThis ingredient is created by putting sodium hyaluronate through hydrolysis.
You might know this as 'mini' or 'ultra low-molecular weight' hyaluronic acid. The small molecule size means it is able to travel deeper in the skin.
According to studies, low molecular-weight hyaluronic acid can:
One study from 2011 found ultra-low weight HA to show pro-inflammatory properties. Another study from 2022 found it to downregulate UV-B induced inflammation.
Hydrolysis is a process of changing a molecule using water or enzymes.
This ingredient is water-soluble.
Learn more about Hydrolyzed Sodium HyaluronateCitric 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 AcidPhenoxyethanol 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.
Ingredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
The Ordinary Alpha Arbutin 2% + HA 15 ingredients
The Purest Solutions Brightening Serum Arbutin 2% + Hyaluronic Acid 25 ingredients
