The base powder is not a must, but it is used for protection: as the first layer, it protects the nail from any discolouration, which is particularly useful for dark and bright colours.

The base powder can also be applied again as the last layer after the colour powder so that the colour result does not change or fade due to the subsequent filing. Highly recommended for glitter and metallic colours!

And if you prefer a dipping manicure with more than 3 coats, you can make an excellent build-up with base powder under the two colour coats.