These 4 bottles of skin tone paint work great. I paid $1.99 for the 4 bottle set. They are airbrushable - I thin them with Vallejo airbrush thinner. I got them at Micheal’s.
I don’t remember what these cost - maybe about $5? They are not airbrushable, the pigments are too thick and clog the airbrush. Maybe useable with brushes, but do not recommend. I got them at hobby lobby.