Last Thursday, in lieu of my afternoon coffee, I placed a sticker on the inside of my wrist. It was transparent, about the size of a dime, and printed with a line drawing of a lightning bolt—which, I hoped, represented the power about to be zapped into my radial vein. The patch had, after all, come in a box labeled Energy Boost.

So-called wellness patches have recently flooded big-box stores, promising to curb anxiety, induce calm, boost libido, or dose children with omega-3s. Their active ingredients are virtually indistinguishable from those of the many oral supplements already hawked by the wellness industry. Whether the skin is a better route for supplements than the stomach isn’t entirely clear. But the appeal of wellness patches seems to have less to do with their effects and more t

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