Share 'Trouble shoot!! General questions'

Hello to all New techs and Vets!! Rhonda I have some questions? When I airbrush painting nails what is the normal airbrush PSI that we supposed to use on the compressor? It was told to me to use it at 40 PSI but that's too much pressure for airbrushing nails " I think". What is the proper ratio to use when using or mixing windex with hot water to clean the gun? How and when to use white as founda…