SW in answer to your question.....as we need the bathroom doing out.[ 3 times had to cancel the suite due to ~###~ builders ]...anyway ive been & scrubbed at the old emulsion paint on the walls & apart from theres the USUAL small amount of 'debris' [ dont know what else to call it as they rub off a small amount of themselves doing the job in hand ]...so no it doesnt remove the paint & it did effect the colour BUT & BIG BUT....the walls are dirty from having new windows etc work done & weve not cleaned up properly as we were expecting to be have bubbles like the meerkat advert.
we LOVE these....we get them from the outlet shop when they are on offer...currently not....& we stock up.......JML or whoever do the same thing as a big brick form that you just hack a lump off.........if your looking for another great cleaner try 826755....this is THE only cleaner/liquid form that we now use...so a bunch of "it works" or similar.....some optixs ...bleach for those sort of jobs ......i cant recommend the optixs enough....happy cleaning & dont be put off with the stuff coming off from the bricks.....its 0nly like brillos etc getting smaller & smaller........& dont tell the family else you#ll be forever giving 'samples' away/..........hope that helps.....