The main purpose of foundation is to even out skin tone and conceal blemishes. There is nothing worse than a demarcation line between face and neck - careful blending is particularly important here. First, decide the type of foundation you like, depending on your lifestyle. Liquid and cream , with their oil and water mix, are most popular. Next, the colour.
Foundations can change colour dramatically once they dry out, so don t decide until then.
The streak which has disappeared completely will be the one most suitable for you. To all make-up artists, proper application of foundation is like preparing a canvas for a painting. If that is not right, the overall picture is just not good enough. Apply to cleansed, toned, and lightly moisturised skin. Blend in each part well before you move on to the next, by working downwards in the direction of facial hairs, and sparingly around eyes.