Skin science article
The INKEY List Beta Hydroxy Acid (BHA) Serum Versus The INKEY List Kaolin Clay Mask
The INKEY List Beta Hydroxy Acid (BHA) Serum Versus The INKEY List Kaolin Clay Mask This acne serum is formulated around Salicylic Acid and Zinc PCA to clear breakouts and refine the look of pores. This wash off mask is made with Kaolin for a rinse-off oil-con
The INKEY List Beta Hydroxy Acid (BHA) Serum Versus The INKEY List Kaolin Clay Mask
This acne serum is formulated around Salicylic Acid and Zinc PCA to clear breakouts and refine the look of pores.
This wash off mask is made with Kaolin for a rinse-off oil-control boost.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Propanediol
Betaine
Salicylic Acid
Sodium Hyaluronate
Zinc PCA
Phenoxyethanol
Hydroxyethylcellulose
Maltodextrin
Sodium Hydroxide
Ethylhexylglycerin
Biosaccharide Gum-1
Trisodium Ethylenediamine Disuccinate
Water, Propanediol, Betaine, Salicylic Acid, Sodium Hyaluronate, Zinc PCA, Phenoxyethanol, Hydroxyethylcellulose, Maltodextrin, Sodium Hydroxide, Ethylhexylglycerin, Biosaccharide Gum-1, Trisodium Ethylenediamine Disuccinate
Kaolin
Aloe Barbadensis Leaf Juice
Glycerin
Glyceryl Stearate
Carthamus Tinctorius Seed Oil
Stearic Acid
Helianthus Annuus Seed Oil
Cetearyl Alcohol
Magnesium Aluminum Silicate
Sodium Stearate
Sodium Magnesium Silicate
Dimethyl Sulfone
Centella Asiatica Extract
Glyceryl Caprylate
Decyl Glucoside
Cellulose Gum
Cocos Nucifera Oil
Cetyl Alcohol
Sodium Carbomer
Tocopherol
Macrocystis Pyrifera Extract
Sea Water Extract
Chondrus Crispus Extract
Vitis Vinifera Seed Oil
Lonicera Caprifolium Flower Extract
Lonicera Japonica Leaf Extract
Tocopheryl Acetate
Panthenol
Oryza Sativa Bran Oil
Geranium Maculatum Extract
Taraxacum Officinale Extract
Equisetum Arvense Extract
Spirulina Maxima Extract
Prunus Armeniaca Kernel Oil
Water, Kaolin, Aloe Barbadensis Leaf Juice, Glycerin, Glyceryl Stearate, Carthamus Tinctorius Seed Oil, Stearic Acid, Helianthus Annuus Seed Oil, Cetearyl Alcohol, Magnesium Aluminum Silicate, Sodium Stearate, Sodium Magnesium Silicate, Phenoxyethanol, Dimethyl Sulfone, Centella Asiatica Extract, Glyceryl Caprylate, Decyl Glucoside, Cellulose Gum, Cocos Nucifera Oil, Cetyl Alcohol, Ethylhexylglycerin, Sodium Carbomer, Tocopherol, Macrocystis Pyrifera Extract, Sea Water Extract, Chondrus Crispus Extract, Vitis Vinifera Seed Oil, Lonicera Caprifolium Flower Extract, Sodium Hydroxide, Lonicera Japonica Leaf Extract, Tocopheryl Acetate, Panthenol, Oryza Sativa Bran Oil, Geranium Maculatum Extract, Taraxacum Officinale Extract, Equisetum Arvense Extract, Spirulina Maxima Extract, Prunus Armeniaca Kernel 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.
Ethylhexylglycerin is created from glycerin. It is a multitasker ingredient that:
The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure to patch test if you are unsure.
Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations.
Phenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!).
It has a large spectrum of antimicrobial activity and especially effective bacteria, yeast, and mold while only having a weak effect on your skin's natural microbiome.
On a cellular level, it disrupts the cell membranes of microbes by poking holes that make the cell leak. This shuts down the chemical reactions the microbe needs to make energy so it can no longer survive.
Another perk of this ingredient is that it stays functional across a wide pH range (3-10).
You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin to Phenoxyethanol damages bacterial membranes as effectively as doubling the Phenoxyethanol concentration on its own.
Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU.
Safety-wise, the fear mongering does not hold up to the evidence. The EU's Scientific Committee on Consumer Safety and FDA consider it safe as a preservative at up to 1%, including for children of all ages.
Adverse systemic effects only showed up in animal studies at exposures roughly 200x higher than what people get from cosmetics. And despite its very widespread use, this ingredient is a rare sensitizer and allergic reactions are uncommon.
Sodium 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.
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!