The INKEY List Lactic Acid Serum - Canada Versus Cos De BAHA Lactic Acid 12.5% Face Peel Serum with HA
Updated on July 10, 2025
Overview
What they are
These products are both cruelty-free and reef safe serums. They have a total of 2 ingredients in common
Cool Features
They both contain AHA
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any harsh alcohols, common allergens, fragrances, 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 INKEY List Lactic Acid Serum 12 ingredients
Cos De BAHA Lactic Acid 12.5% Face Peel Serum with HA 11 ingredients
What's inside
What's inside
At a glance
Click on any of the items below to learn more
The INKEY List Lactic Acid Serum 12 ingredients
Cos De BAHA Lactic Acid 12.5% Face Peel Serum with HA 11 ingredients
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Lactic Acid is an alpha hydroxy acid (AHA). It is known for its ability to gentle exfoliate, hydrate, and brighten skin.
In the right concentration (~5-12% and an ideal pH of 3-4), lactic acid breaks down the bonds holding dead skin cells together to shed them naturally. This process reveals smoother skin and a more even skin tone.
Higher concentrations (12% and up) can reach a deeper structural layer of the skin to improve skin texture and firmness over time.
Because it has a larger molecular size than glycolic Acid, it is able to penetrate more slowly, thus making it less irritating and ideal for sensitive or beginner skin types.
Lactic acid also acts as a humectant (like hyaluronic acid). It can draw water into the skin to improve hydration and also plays a role in the skin's natural moisturizing factor (NMF) in the form of sodium lactate.
Studies show it can boost ceramide production to strengthen the skin barrier and even help balance the skin’s microbiome.
In summary, lactic acid is a gentle yet powerful multitasker that smooths, hydrates, strengthens, and brightens the skin.
Though it was originally derived from milk, most modern lactic acid used in skincare is vegan. It is made through non-dairy fermentation to create a bio-identical and stable form suitable for all formulations.
Legend has it that Cleopatra used to bathe in sour milk to help reduce wrinkles.
Read more about some other popular AHA's here:
Learn more about Lactic AcidPropanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.Â
It’s often used to:
Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.
Learn more about PropanediolIngredient Ratings
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When to use
The INKEY List Lactic Acid Serum 12 ingredients
Cos De BAHA Lactic Acid 12.5% Face Peel Serum with HA 11 ingredients
Reviews
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