I'm not sure if there is such a topic already. If there is, do point it out. I'm using Vichy's Normaderm Anti-Imperfections but I find it too dry so I layer Biotherm's Aquasource Non Stop on top of it. This is just an example of my layering regime. Question is, is it advisable to layer different stuff (for different purposes) on the face at one go? I'm afraid the chemicals will react and produce something else. I'm also using b.liv's Off With Those Heads before I put on anything. During daytime, I have to layer three different stuff because I have to use sunblock. I don't like to use moisturiser with SPFs because I find it very greasy hence the only sunblock I'm comfortable with now is Sunplay's Skin Aqua because it's very lightweight and I don't feel it's there. Another thing is, will the product lose its effectiveness if it's layered with other things? Your views? Thanks! =D