The YSL All Hours Foundation I had already put on my Must-Have Beauty Products at the beginning of this year for 2018. Because I have been an ambassador for YSL Beauty in collaboration with Glamour.nl in the recent months, I was allowed to test this foundation. The YSL All Hours Foundation in short: a long-lasting foundation with a high coverage without a mask effect. Doesn't transfer, provides a matte finish, is waterproof, contains SPF 20 and has a caring formula. YSL Encre De Peau All Hours Foundation. The foundation comes in a frosted glass pump bottle and is chic. The content is 25ml. ...