In a word- wow! As an incredibly oily 35 year old, i had almost given up hope of having a matte finish skin. Generally my make up is sliding off my face within 30 mins of application. This primer is fantastic. Just a small amount on the forehead, nose, chin and cheeks, allow to dry for 5-10 mins and then apply foundation. It stays put. All day. Thank you S & B ladies who have recommended this in the past