Co-founder Dr. Shari Auth walks us through how and why to give at-home facial cupping a try and why you shouldn’t be scared of ancient beauty practices. You know that saying, “everything old is new again?” Well, nowhere is that truer than in the world of skincare. Over the last few years, it seems like a “new” ancient self-care technique is reintroduced — and we couldn’t be more psyched about this trend. After all, if something has withstood the test…