Touching up your makeup can be super simple but knowing when to fix it is the real point. During the day, your skin gets really oily and it can be super annoying to deal with. That is when you know it is time to touch up you makeup.
The oil in your skin can easily seep through your makeup which is why women always carry powder with them. I always carry around powder with me because my skin gets really oily thought the day and powder really does the trick. You can use the sponge that comes with your powder or take a small powder brush with you. I take a medium powder brush and a compact mirror with me. That is what gets me through the day.