I find that if I wrap my soap with plastic wrap and a homemade paper label under the plastic (instead of sticking it on the outside), my soap lasts longer. I live in a very humid area so I can't leave my soap unwrapped after cure time otherwise it gets wet from humidity. And if I wrap the soap with label on the outside, humidity and temperature will still affect the soap bar and make it wet. Buuuut if I put the label on the inside, the paper absorbs any extra moisture inside the wrapping.