Principia Serum Facial AG-10 Versus The Ordinary AHA 30% + BHA 2% Peeling Solution
Updated on May 19, 2025
Overview
What they are
These products are both vegan, cruelty-free, and reef safe . They have a total of 5 ingredients in common
Cool Features
They both contain AHA and hyaluronic acid
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any harsh alcohols, common allergens, 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
Principia Serum Facial AG-10 20 ingredients
The Ordinary AHA 30% + BHA 2% Peeling Solution 24 ingredients
What's inside
What's inside
At a glance
Click on any of the items below to learn more
Principia Serum Facial AG-10 20 ingredients
The Ordinary AHA 30% + BHA 2% Peeling Solution 24 ingredients
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningXanthan Gum
EmulsifyingDisodium EDTA
Sodium Hyaluronate
Humectant
Glycolic Acid
Buffering
Betaine
Humectant
Sodium PCA
Humectant
Sodium Lactate
BufferingPCA
Humectant
Serine
Masking
Alanine
MaskingGlycine
Buffering
Glutamic Acid
Humectant
Lysine Hcl
Skin Conditioning
Threonine
Arginine
Masking
Proline
Skin ConditioningSodium Hydroxide
BufferingPhenoxyethanol
Preservative
Caprylyl Glycol
Emollient
Glycolic Acid
Buffering
Water
Skin ConditioningAloe Barbadensis Leaf Water
MaskingSodium Hydroxide
BufferingDaucus Carota Sativa Extract
Perfuming
Propanediol
Solvent
Cocamidopropyl Dimethylamine
EmulsifyingSalicylic Acid
Masking
Lactic Acid
Buffering
Tartaric Acid
Buffering
Citric Acid
Buffering
Panthenol
Skin Conditioning
Sodium Hyaluronate Crosspolymer
Humectant
Tasmannia Lanceolata Fruit/Leaf Extract
Antioxidant
Glycerin
Humectant
Pentylene Glycol
Skin ConditioningXanthan Gum
EmulsifyingPolysorbate 20
Emulsifying
Trisodium Ethylenediamine Disuccinate
Potassium Sorbate
Preservative
Sodium Benzoate
Masking
Ethylhexylglycerin
Skin Conditioning1,2-Hexanediol
Skin Conditioning
Caprylyl Glycol
Emollient
Glycolic Acid, Water, Aloe Barbadensis Leaf Water, Sodium Hydroxide, Daucus Carota Sativa Extract, Propanediol, Cocamidopropyl Dimethylamine, Salicylic Acid, Lactic Acid, Tartaric Acid, Citric Acid, Panthenol, Sodium Hyaluronate Crosspolymer, Tasmannia Lanceolata Fruit/Leaf Extract, Glycerin, Pentylene Glycol, Xanthan Gum, Polysorbate 20, Trisodium Ethylenediamine Disuccinate, Potassium Sorbate, Sodium Benzoate, Ethylhexylglycerin, 1,2-Hexanediol, Caprylyl Glycol
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
It is a common ingredient in many products, especially those designed to hydrate skin. The primary benefits are retaining moisture, skin softening, and promoting a healthy skin barrier.
Though Caprylyl Glycol is an alcohol derived from fatty acids, it is not the kind that can dry out skin.
This ingredient is also used as a preservative to extend the life of products. It has slight antimicrobial properties.
Learn more about Caprylyl GlycolGlycolic Acid is arguably the most famous alpha hydroxy acid (AHA) with tons of research backing its benefits.
It is found naturally in sugar cane but the form used in skincare is usually synthetic for purity and stability.
Glycolic acid removes the top layer of dead skin cells to allow newer and fresher ones to emerge.
AHAs work by breaking down the structural “glue” that holds old skin cells in place. When that buildup is gone, your skin can renew itself more efficiently.
Research also shows glycolic acid stimulates collagen production, helping to firm and thicken the skin over time. This is one of its biggest advantages over other AHAs.
Overall, glycolic acid helps with:
Fun fact: Glycolic acid boosts skin hydration by helping it produce molecules that increase hyaluronic acid naturally.
To work best, glycolic acid products should have a pH between 3-4 (that’s where exfoliation is most effective but still gentle on skin).
The pH and concentration of a product are key to its effectiveness:
It is normal to feel a slight stinging sensation when using glycolic acid. This usually fades as your skin adjusts.
Because glycolic acid has the smallest molecular size in the AHA family, it can penetrate deeper, which enhances its effectiveness but also makes it more likely to irritate sensitive skin.
If your skin is very sensitive or prone to rosacea, glycolic acid may be too strong; in that case, try milder options like lactic acid or a PHA instead.
Recent studies suggest glycolic acid might even help protect against UV damage. But don’t skip sunscreen! Freshly exfoliated skin is more sensitive to the sun.
Glycolic acid is a skincare superstar. It smooths, brightens, hydrates, and firms the skin. Unless you’re highly sensitive, it’s well worth adding to your routine.
Read more about some other popular AHA's here:
Learn more about Glycolic 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 HydroxideWater. 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 WaterXanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.
On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.
Xanthan gum is a pretty common and great ingredient. It is a natural, non-toxic, non-irritating ingredient that is also commonly used in food products.
Learn more about Xanthan GumIngredient Ratings
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When to use
Principia Serum Facial AG-10 20 ingredients
The Ordinary AHA 30% + BHA 2% Peeling Solution 24 ingredients
Reviews
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