Because that is what CND tells us to do ? :biggrin:
:lol: Love this answer!
Shellac base coat is a different formulation to the colour coats and top coat. It doesn't have 'tiny tunnels' in it - instead it contains easy release polymers and if cured for two minutes, it would take longer to release from the nail.
It also has a different brush for a thinner application.
HTHs
I was just stalling...I knew it wouldn't be long until someone posted the proper scientific answer.
Clever clogs :wink2:
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