Does Bar Soap Go Bad?

Soap does expire, but if it still lathers when you wash your hands, it should be effective. Most commercial store-bought soaps expire after two to three years. Natural or handmade soaps may expire sooner, within one year, as the essential oils and fragrances can get rancid or moldy.

Is it OK to use expired bar soap?

Expired soap allows for the bacteria to grow rapidly and dangerously as the fats and essential oils have faded in potency.” Additionally, using an old bar of soap can cause skin rashes and sensitivity. ... Do not risk it — toss out any soap with mold. Use natural soaps first, as they will expire before commercial soaps.

How long can you keep bar soap?

Bar soap can last four to six weeks, or even more, as long as you let it dry out between uses.