A lot of women fail to realize how beautiful they are bare. Makeup is not for every day. If it is worn in the wrong times it can backfires. If you are out in nature for instance, your skin will look tired with foundation on. It will look caky. Same applies to lipsticks and eyeliners.
The outdoors add a beautiful glow to your skin, if you think you are hiding some flaws with concealers, the sun hitting these products will make them looks worse. Set yourself free and appreciate your true beauty, let nature be your makeup :)