The Paleo trend has come for your face: “Caveman skin” is the latest beauty routine taking over social media. After circulating on Reddit for a few years, it was popularized this spring by Montreal-based TikTokker Tia Zakher, who went viral on the app for going about three months without putting anything on her face — no water, no cleanser, no moisturizer, nothing.

The idea is that it’s an elimination diet for your skin; an epidermal reset, if you will. “For years, I picked and over-exfoliated and damaged my skin really badly … My skin is basically shedding all the damage and attempting to reregulate itself,” Zakher says in a video about the trend. Over the course of her attempt, which she says she did with guidance from her dermatologist, her skin looks as if it’s pilling and then peeling off.

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