Black Is White CURADEN AG
Amlehnstrasse 22
CH-6010 Kriens


Do you have any questions about your «Hydrosonic Black Is White» – either the sonic toothbrush or the toothpaste?
Or would you like some tips on oral health?

Please feel free to send us your questions by e-mail to Helpful information can often be found in our FAQs:


Is something not working?
Contact us at
Helpful information can often be found in our FAQs:
This is also where you can find out the best way to exchange your «Hydrosonic Black Is White» should you need to do so.

The warranty is valid for two years.

We will endeavour to accommodate your requirements as far as possible.

If you are not satisfied with your «Hydrosonic Black Is White», you can return it within 30 days of the purchase date and get your money back. Details can be found at


CURAPROX is the oral health brand of CURADEN AG, which is headquartered in Kriens, near Lucerne in Switzerland. Working with dental professionals in teaching, research and practice since 1972, CURAPROX has been developing oral health tools that are as gentle and effective as possible.