Yes. Bacteria can grow on bar soaps, but they are typically not harmful to people with a healthy immune system. If your immune system is compromised, it will serve you better to use liquid soaps instead as bacteria find it virtually impossible to get into liquid soap because of the containers that come in. If you still want to use bar soaps, you can rinse the soap before using it, or ensure that you keep it in a dry environment after use. These steps ensure that bacteria can’t easily find their way to your soap.\r