Probably not. A few people have noted that she appears to be using some cosmetics - foundations, eyeshadows, perfumes - that were outright discontinued years ago. I remember one of the discontinued products was some kind of perfume or body spray from Victoria's Secret, and I think she was also seen using a lipstick that was at least two years old. Plus, she has all those zillions of limidishun pallids fron Urban Decay and Kat Von D that she's been hanging onto (but not using) for yeeears.
Lots of people don't know makeup expires, to be fair. My mom thought that only 'wet' products (like mascara or lipstick or creme / liquid products) expired, and that dry powders and pencils were fine indefinitely as long as they were kept in a dry place and you didn't get pinkeye. Of course, my mom isn't claiming to be a beauty guru. Kailyn has no excuse for not knowing this shit. You'd think this would have been included in her EXTENSIVE 40-hour makeup course.