There are a few simple and easy steps to follow in order to maintain your natural stone sink and bath tub in 'like new' condition... and each one involves very little time and effort on your part!  

Here's what to do and how often you need to do it:

1. After each use, give your sink and bathtub a quick rinse with clean water just to be sure your not leaving behind any chemicals or harmful residues that could build up on the surface or etch into the stone. 

2. Give your stone sink and tub a periodic cleaning with a very mild soap and dry it with a soft, clean cloth.

3. Re-apply a protective sealant to your sink and bath tub on an 'as needed' basis... but at least once every 15 to 24 months, depending on its use. 

That's it!  Follow these simple recommendations and your natural stone sink and bathtub will still look as beautiful after 5... 10... even 50 years! of use, as it did on the first day it was installed in your home! 

And, there's one more important note. All types of abrasive products and acid-based cleaners will scratch the surface of your sink and bathtub and may cause irreparable damage.  Always, always, always avoid using abrasive and/or acid-based products on your natural stone sink and tub.