"When it comes to your makeup case, we are worried about health and beauty. It is important that you change your most of your products every three months," Glam.com Executive Editorial Director Nola Weinstein.
Typically, the thinking is that you want to be in on the latest colors and style but beyond that, you want to protect yourself against infections. "Things get gross and disgusting, so it is important to take care of yourself by taking good care of your makeup case," Weinstein said.
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