What's inside
What's inside
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.
Acetyl Tributyl Citrate is a fragrance.
We don't have a description for Adipic Acid/Neopentyl Glycol/Trimellitic Anhydride Copolymer yet.
We don't have a description for Butyl Acetate yet.
Ethyl Acetate is a fragrance.
Glycolic 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 AcidIsopropyl Alcohol is a small, fast-evaporating alcohol.
Formulators use it as a solvent, a way to think out thick liquids, an antifoaming agent, and occasionally a fragrance ingredient.
Reported use concentrations run from 0.002%-100% and any number over 50% usually comes from a nail product.
Actual skincare numbers run much lower: cleansers (0.3-26%), toners (0.07-7%), face moisturizers (0.04-0.2%).
The Cosmetic Ingredient Review Expert Panel reviewed it and concluded it is safe in the present practices of use and the International Agency for Research on Cancer classifies it as a non-carcinogenic to humans.
True allergy to this ingredient is uncommon but real: 44 out of 1,450 patients patch tested between 1992-2011 reacted with most cases clustering in people with leg ulcers, occupational hand eczema, or repeated use of Isopropyl Alcohol on already-broken skin.
Irritation and dryness are far more likely than allergy; before you throw away your skincare, just know this is dose-dependent and the risk is modest.
The irritant potential of the alcohols used in hand antiseptics is very low and skin irritation is significantly lower after alcohol application than after detergents (though isopropanol is somewhat more irritating than ethanol).
A 70% solution was a severe eye irritant in rabbit eye tests so the industry keeps this ingredient at low percentages in eye-area products.
One genuine caution: a 70% solution was a severe eye irritant in rabbit eye tests, so it belongs at low percentages in eye-area products, which is where the industry already keeps it.
According to the National Rosacea Society based in the US, you should be mindful of products with these alcohols in the top half of ingredients.
Learn more about Isopropyl AlcoholN-Butyl Alcohol is a fragrance and is an alcohol.
We don't have a description for Nitrocellulose yet.
We don't have a description for Trimethylpentanediyl Dibenzoate yet.
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. Remember to stay hydrated!
Learn more about Water
