No preservatives are added to these soaps. So please don’t let it sit or stand in a pool of water. Make sure you use a draining soap dish. Better yet, use two wood slatted soap dishes. Swap them out every two weeks and let one dry out completely. This will allow the wood to dry out and extend its usefulness. Your soap is made to melt easily as you use it. Don’t let standing water age your soap prematurely!