The personality can and does show itself in many guises. From a spiritual perspective we find a need to cover up or disguise blemishes in our character. Psychologically we may feel that we have a problem with our public image, and need to put on some sort of front before we can be seen by others. To be using cosmetics in a dream can have two meanings. We register the fact that we are covering up our features or that, conversely, we are enhancing our natural beauty. If we are using cosmetics on someone else, we literally need to 'make up' with that person. You might like to enhance your understanding by consulting the entry for Make-Up.