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Even the most popular beauty brands and their viral products are not immune to the internets cut-throat critique.

Images of Kosas concealer on a pink background with blue spots

Bella Geraci

The latest name on the chopping block?

Now, fans are questioning its shelf-life.

What, exactly, caused this shift?

Under a section titled, “Is it true that Kosas products are preservative-free?”

What’s in the Kosas Revealer Concealer Formula?

“Their preservative includes potassium sorbate, sodium benzoate, and phenethyl alcohol.

How Long Is Kosas Revealer Concealer Supposed to Last?

How Do You Know If Your Makeup Has Expired?

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