One/Size by Patrick Starrr Ultimate Blurring Setting Powder Versus One/Size by Patrick Starrr Turn Up The Base Versatile Powder Foundation

Because it is not a free-fatty acid, this ingredient is fungal acne safe (there's nothing for Malassezia to feed on).

Some people may experience allergies from this dye, especially asthmatics and those with an aspirin intolerance.

There's no published concentration use from surveys so the best available numbers are supplier guidance: 5-10% for loose powders and 2-5% for creamy cosmetics + pressed powder binding.

The CIR Expert Panel reviewed Magnesium Myristate as part of its assessment of myristic acid and its salts and esters, and concluded the whole group is safe as used in cosmetics.

In human studies, Myristic Acid was non-irritating up to 50% and 100% Magnesium Stearate was non-irritating and non-corrosive on skin and non-irritating to the eye.

There are no published contact allergy case reports for this ingredient so allergy risk is low, but not zero for any ingredient.

There is no comedogenic data for Magnesum Myristate. The comedogenic ratings that circulate for "myristates" come from Isopropyl Myristate which is a structurally different ester.

The rabbit-ear models those comedogenic ratings come from have been shown to be unreliable for predicting whether a finished product will clog pores.

Human testing has proved that any finished product with a comedogenic ingredient won't automatically make you break out; it really comes down to concentration, formula, and your skin.

Some people still find it breaks them out. So if that's you, definitely trust your skin.