Most of the products are okay. The downside is that the Caffeine solution looks questionable. Is it supposed to look like something is growing in there? I'm afraid to test it. Luckily, it was just a small bottle. The Niacimide Zinc pipette was clogged because the product had congealed in the pipette. The smell is a bit different from the previous one. I got a bit of a feeling with these two that expired products are involved🤷♀ Otherwise, my skin has been in good condition with these. I've used all the others except for the Caffeine Solution.