If I make an action and it takes some time or its a bit complex I save it out incase I mess it up or loese it somehow .and if you use a model with the same rig you can probably use that action again
Maybe not I have an image with several colours in and am using the muhair ,but to be honest that the look I wanted ,I see a young girl the other day with hair like this and thought it would make a good hairstyle for my model