Refillable deodorant is going mainstream as brands from Wild to Dove roll out reusable cases paired with swap-in refills. Here’s what shoppers should know about the biggest names driving the shift. What Is Refillable Deodorant and How Does It Work? Refillable deodorant uses a reusable outer case, often made of stainless steel or durable plastic, paired with replaceable refill cartridges or pods, so the container stays and only the formula is swapped. Brands including Wild, Dove, Saltair and Fussy have built product lines around this system to cut down on single-use plastic tossed after every e...