That happens often when there is water in a formulation. Just shake it up and it's good as new. I thought you were using the stick though? Are you using primer? Are you applying powder before and after the foundation? Milk of Magnesia before silicone primer? What kind of powder are you using? I can get it to last all day with: a physical sunscreen, silicone primer (applying the foundation within a minute or so after the primer so they can bind together), pressing pure silica powder into it then buffing off the excess. I may have to use blotting sheets once or twice. And, I am jealous - I live in SoCal and can never find decent cosmetics marketed toward WOC near me. I have to get to "certain" areas to get them. Some BSS carry them but they are always marked up and I don't know how often they rotate their stock. I am always seeeing Black Opal stuff, for example, in the old packaging, or products, like the lip erase, which have been discontinued for over a year. Time to put that ish on clearance.