The YSL Fusion Ink is a very lightweight foundation that promises 24-hour wear. I am not sure about the 24-hour claim, but it is definitely long-lasting. Although it is matte, I still feel like it hydrates my skin at the same time without causing the ‘oilies’ to show up so it is perfect for combination to oily skin. It also does not break me out, which is a blessing. A lot of people don’t use powder with this foundation but I like to, just to help with longevity. The formula is very runny, which I’m not usually a fan of, but it sets quickly after I buff it into the skin with a stippling brush. I went for shade B50 which I find suits me perfectly.