Say hello to a primer you can trust with the Yves Saint Laurent All Hours Primer SPF18, a mattifying base suitable for all skin types. The essential first step in any makeup routine, the YSL All Hours Primer works to perfect your complexion by mattifying & smoothing the skin, creating the ideal canvas for foundation, bronzers & powders. The silky formula contains oil-control actives that improve makeup wear & adherence, leaving skin shine-free & flawless all day. Although it's made with all skin types in mind, the All Hours Primer will work especially well for those with oily to combination skin as the smoothing texture will minimise pores & reduce the look of fine lines & imperfections. Why We Love It We've all fallen for the false promises of a primer before, but luckily, the All Hours Primer doesn't fall short! Not only does it leave skin super smooth & prepped for your base but it makes sure your makeup stays put. This primer means business! How To Use It Apply a small amount onto fingers & smooth evenly all over the face. Apply before foundation for a seamless matte finish. Values Dermatologically-tested, non-comedogenic.