I did not know before this but for the price, very little to lose. So I started with my bathtub enamel was seriously dirty, difficult to clean. Result, Bath as new, finishing all "smooth". Similarly to the kitchen sink. Also works great for deep cleaning pans or pots stainless steel having burnt something. Give a polished finish pleasant enough with a little work. Perfume level, no worries, no too strong for my nose, however we must be careful to rinse the cleaned areas, otherwise when the water evaporates, it will remain a white residue