The paints may be applied by brush or spray; the small spray attachment for vacuum cleaners is very convenient, especially for painting radiators.
The most challenging question and statement a stylist or colorist can receive is: Can you correct this hair color I applied at home? It looks terrible! I personally love doing corrective hair coloring. A lot of hair stylist do not like this area of our field. Be sure your stylist has plenty of experience in this area of hair coloring if you need this service rendered. I really won't go too in depth here about corrective hair coloring, accept that, usually a botched at home color can be corrected with the following: Time at the salon for the correction. Money, as this service can be expensive. Cooperation with, and trust in, the hair stylist's or hair colorist's judgment.
One precaution: You can't paint with it in cold weather. The chemical reaction that transforms the water solution into a durable finish will not take place if the temperature is below 50°. (Conventional oil paints don't stick well in cold weather, either.)
Basically what you're looking for is a good, solid foundation of existing paint that is stable and still strongly bonded to the car. Many times an original factory paint job, even after decades will meet these criteria.
A Gloss paint is easy to clean and resists scuffs better. This is ideal for rooms that are constantly used. Most gloss paints are best recommended to use on woodworks, baseboards, kitchen and bathroom walls, doorjambs, and window casings. The downside of using gloss paints, however, is the noticeable imperfections in the wall surface.
Step four: the key to a finished looking painting is to build it just like a house...and by that I mean layers. Paint it in the reverse order in which the eye sees it to make it three-dimensional. By this I mean paint what's farthest from the eye first, and build layer upon layer towards the eye. In other words, do the background first because it should be the farthest from the eye, then add the objects on top of that, and then add the shadows to complete the look. Ultimately it's common sense. If you paint a bowl of fruit, the bowl and fruit need to sit on top of that background, much as it would in real life.
You're not looking for perfection here, but you do want to eliminate every shiny spot of paint. When properly scuffed the paint should have a smooth, but dull matte finish.