Less water required

Independent research, commissioned by Deb, has shown that when using foam soap, people use 16% less water than when using liquid soap.

However, the company says water savings can be increased further by adopting Deb's recommended foam soap hand washing technique -dispense, lather, tap on, rinse. By switching to this method Deb suggests people could use up to 45% less water compared with liquid soap. Additionally, as less water is required for rinsing, there are also savings to be made in energy use and CO2 emissions.

Using less product does not equate to less efficacy; according to Deb, research showed that there is no significant difference in the cleaning ability between 0.7ml of Deb foam soap compared to 1.1ml of the lotion soap, confirming that the same efficacy is delivered from foam with less product.

Finally, using a foam hand wash translates to more washes in the same amount of packaging.