InStyle talks with skincare and makeup experts on why beauty products need to be tossed out and how long to keep them before giving them the heave ho.

Nail polish can be kept for  up to one year, but you should start examining it after nine months to check for color fading and separation, cosmetic chemist Ni’Kita Wilson tells the mag. “That’s when you can tell that it won’t go smoothly.”

Staff Writer

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