Grease paint is not for ordinary or everyday wear, and while some could put on dabs and thinner layers of these when going out shopping, say, it is difficult to put on or take off. That means you have to be aware what products you are using in this sense. The premium is to make a visual palette that looks natural on you as well as attractive.
The stage is where grease paint and related items are really useful. Theater makeup is partly a creative process that is made by experts and where some unique products are utilized. The more important part of making a production something well appreciated is related to makeup but here it provides a subtler quality.
Of course you will notice how actors on stage are heavily rouged or made up. But the effect often goes well with roles, scenes and even the emotional content or burden of characters that are being played. These are usually folks tasked to create tension, drama, humor and understanding of variations in plot.
The cosmetics help in this way, and in Japanese theater, these have their own set of qualities related to signs, symbols and messages conveyed to the audience. Theater thus makes use of all the things that are used in it, from cosmetics to stage scenery. The effect is something that may even be painterly when it comes to visual impact.
This is especially relevant to makeup, and the experts or pros working with cosmetics are called artists. There is no denying the fact that the human face is a more versatile and convincing palette with the proper tones and hues defined by layers of grease and dyes. Grease is used to highlight the fact which tends to fade into the scenery when not done up.
The lights and props are often fantastically bright or have great impact. The actors also have to standout amidst the inanimate drama. They are the animators within the total complex of a stage that have need of cosmetics and visuals that make their moves that much more appreciable and well understood.
A director and the production unit should have a basic understanding of the interplay between lighting, scenery and done up actors. This helps to keep a play more interesting, and lags and other negative but usually unseen effects may occur if they do not use this interplay well. An audience is not usually expert here, but their senses can tell them if anything is off.
What is usually done is to put on makeup beforehand in preparation for the live action on stage. The rehearsals will not require these. Only on the last of final rehearsals will the complete settings and processes are used, and these will be called dress rehearsals, the action that is the real thing with the exception of an audience.
The total effect is studied in these settings or action, and the entire crew will know whether there is something amiss. Some adjustments are made through the reminder of the schedule and the final one will ideally be something that everyone agrees is at minimum workable. The feeling of completion builds up confidence for the one off live performances.