Our bottles have a volume of 17.5ml and are filled with 15.2ml. That's why they are never full to the brim.

The Activator and Brush Saver are as fluid as water in their consistency, whereas the Base and Top Coat are like a thick gel and therefore differ from each other in their density. The quantity in millilitres is always the same, but the liquids can vary in grams due to their different consistencies.

Due to their water-like consistency, Activator and Brush Saver also make noises when shaken, whereas Base and Top Coat do not due to their gel-like consistency, which could give the impression that the two types of liquid are filled differently. But this is not the case.

A little tip: spread the Activator on a piece of paper. You will see that there is enough liquid on it.