A vanity with beauty tools and makeup may bring the message that you are too vain. It may also point to a desire to look pretty or to get some aid in developing your own beauty.... Ariadne's Book of Dream
To dream of vanity or being offended by another person’s vanity implies that you are about to become aware of your own mortality. This may be in the form of a close call or a simple realization and acceptance of the aging process.
To dream of your own vanity implies that you may need to spend some time releasing your self-judgment so as to enjoy the details of your life more.... Dream Symbols and Analysis