Join more than 100,000 members today and you’ll get:
Soft soap scum
To simulate soft soap scum, we use a scum comprised of hard soaps, synthetic sebum (simulating bodily oils) and carbon black (to give the scum colour so its removal can be measured). The scum is baked on to white ceramic tiles at 80°C and is then scrubbed off with a mechanical scrubbing arm. To determine the scum-removal score, we measured the light reflected before and after scrubbing. We repeated each test three times and averaged the results.
Hard soap scum
To simulate hard soap scum, we used a combination of calcium stearate and carbon black. Calcium stearate is the most common hard soap scum and is formed due to the reaction between soap ingredients and calcium ions present in water. The scum is baked on to white ceramic tiles at 180°C and is then scrubbed off with a mechanical scrubbing arm. To determine the scum-removal score, we measured the light reflected before and after scrubbing. We repeated each test three times and averaged the results.
18 Jun 2016, Lee
Product use: 1 month or less
Used on stainless steel surfaces of a shower over bath set up. Works as expected on hard soap scum. Bought this and the Dettol health... one. Bought both as I didn't know whether I had hard or soft soap scum and the Dettol version is best on soft soap scum (as per Consumer review). Followed the directions (spray, leave and rinse) first time around, made a good difference, about 30-40% removed. Did a second application and then instead of rinsing, used one of those silver coloured plastic scrubbing pads to, well, scrub. Made a much bigger difference, about 90% clean now.
The spray action of the nozzle doesn't give much coverage. It comes out as foam in a narrow 'beam'.
Yes, I recommend this product.
This information is available to Consumer members only.