Topicals Slather Exfoliating Body Serum with Retinol and AHAs Versus The INKEY List Glycolic Acid Exfoliating Body Stick

Topicals Slather Exfoliating Body Serum with Retinol and AHAs Versus The INKEY List Glycolic Acid Exfoliating Body Stick

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Diethylhexyl Succinate

C12-15 Alkyl Benzoate

Glycolic Acid

Cetearyl Alcohol

Potassium Hydroxide

Glyceryl Stearate

PEG-100 Stearate

Retinol

Lactic Acid

Urea

Squalane

Glycerin

Phospholipids

Ubiquinone

Camellia Sinensis Leaf Extract

Tocopheryl Acetate

C13-14 Isoparaffin

Caprylic/Capric Triglyceride

Polyacrylamide

Laureth-7

Cetearyl Glucoside

Xanthan Gum

Potassium Sorbate

Sodium Benzoate

Phenoxyethanol

Disodium EDTA

Water, Diethylhexyl Succinate, C12-15 Alkyl Benzoate, Glycolic Acid, Cetearyl Alcohol, Potassium Hydroxide, Glyceryl Stearate, PEG-100 Stearate, Retinol, Lactic Acid, Urea, Squalane, Glycerin, Phospholipids, Ubiquinone, Camellia Sinensis Leaf Extract, Tocopheryl Acetate, C13-14 Isoparaffin, Caprylic/Capric Triglyceride, Polyacrylamide, Laureth-7, Cetearyl Glucoside, Xanthan Gum, Potassium Sorbate, Sodium Benzoate, Phenoxyethanol, Disodium EDTA

Octyldodecanol

Coco-Caprylate/Caprate

Butyrospermum Parkii Butter

Helianthus Annuus Seed Wax

Ozokerite

Simmondsia Chinensis Seed Oil

Salicylic Acid

Cocamidopropyl Dimethylamine

Ascorbyl Palmitate

Tocopherol

Helianthus Annuus Seed Oil

Octyldodecanol, Coco-Caprylate/Caprate, Butyrospermum Parkii Butter, Helianthus Annuus Seed Wax, Glycolic Acid, Ozokerite, Cetearyl Alcohol, Water, PEG-100 Stearate, Glyceryl Stearate, Simmondsia Chinensis Seed Oil, Salicylic Acid, Cocamidopropyl Dimethylamine, Ascorbyl Palmitate, Tocopherol, Helianthus Annuus Seed Oil

Reviews

Alternatives

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Cetearyl alcohol is a waxy mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is an emollient and emulsifier.

Despite having "alcohol" in its name, it has nothing to do with drying solvent alcohols; the FDA also allows "alcohol-free" products to contain fatty alcohols like this ingredient.

It plays several roles in a formula:

Typical use levels for this ingredient sit around 1-10% and the Cosmetic Ingredient Review Expert Panel has affirmed safety at concentrations up to 25% in leave-on products.

Multiple assessments have found it to be non-irritating and non-sensitizing to most people.

However, there have been some cases of allergic contact dermatitis in patients with chronically compromised skin barriers.

Cetearyl alcohol has a comedogenic rating of 2 and irritancy rating of 1. Both of these numbers come from the 1989 study that used rabbit ears; a "2" means mildly comedogenic and a "1" means low irritancy.

Here's the catch: rabbit skin is more sensitive than human skin and throws a lot of false positives. A 1996 reappraisal found that ingredients rated 1-2 in the rabbit ear tests are generally safe for humans.

Remember comedogenic ratings are unable to assess the entire formula of a product or how it will react on your skin. Just be sure to patch test if you are unsure about certain ingredients.

This ingredient is not fungal acne safe. Cetearyl alcohol is a fatty alcohol with chain lengths that fall within the range that Malassezia can metabolize.

A 2019 study has also observed Malassezia growth in the presence of this ingredient, confirming it to be not-fungal acne safe.

Glyceryl Stearate is made by reacting glycerin with stearic acid (typically sourced from plant oils like palm or coconut). It's an emulsifier, emollient, and mild occlusive.

Emulsifiers help ingredients like oil and water stay mixed so your formula stays nicely blended and uniform in texture.

This ingredient is typically used in concentrations between 1-10%. Studies have found it to be non-sensitizing, non-phototoxic, and non-photoallergenic.

A close cousin of this ingredient is Glyceryl Stearate SE ("self-emulsifying"). This just has a small amount of sodium or potassium stearate added so it can emulsify without a co-emulsifier.

Since this ingredient is an ester of a C18 fatty acid, it may not be fungal acne safe. The Malassezia yeast can potentially metabolize within the C11-C24 range.

Fun fact: The human body also creates Glyceryl Stearate naturally.

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:

Peg-100 Stearate is an emollient and emulsifier. As an emollient, it helps keep skin soft by trapping moisture in. On the other hand, emulsifiers help prevent oil and water from separating in a product.

PEGS are a hydrophilic polyether compound . There are 100 ethylene oxide monomers in Peg-100 Stearate. Peg-100 Stearate is polyethylene glycol ester of stearic acid.

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!

Similar Comparisons