I have used both the white and colored Clic Erasers. I like the colored ones better and they last longer. The white ones crumble faster, requires more pressure to erase and after "clicking" a section of the eraser from the dispenser, the tips rip off/split from the dispenser. This causes the eraser to be used up faster and is very annoying to experience while using it on paper. I don't know if the ingredients from the colored ones are different from the white ones, but I am not happy with the white versions and will convert to the colored versions.