It’s basic chemistry: oil and water don’t mix. If you use a water-based moisturizer and a silicone-based foundation, the silicone will eventually "slip" off the water layer, causing separation on the nose and chin. Check your ingredients: Dimethicone = Silicone. Aqua = Water. Go check your makeup bag right now. Drop a comment below with your favorite primer and foundation combo—let’s audit them to see if they are chemically compatible!

-  Carrying 20 glass foundation bottles is bad for your back and travel fees. Use a metal spatula and low heat to depot, but warning: Baked powders (dome shape) will break if depotted. Only depot flat pans or creams! - Post a photo in the comments of the "messiest" part of your kit. We won't judge—we're here to fix it!