Let it dry, let it dry! Please allow your soap bars to dry after each use. It is best to store them on a surface that has adequate drainage so the bar isn't sitting in a puddle. The drier it gets between uses, the longer it will last. Use a cotton wash cloth or loofah to extend soap's life rather than rubbing the bar all over yourself. Store unused soap in a dark, dry, room temp place like a lingerie drawer or linen closet. Excessive heat, light, and moisture are natural soap's worst enemies and will cause quality deterioration.