You probably know if your skin tone is fair/light (as opposed to medium or dark), but there’s more to the foundation story. If you have pink undertones, you’re Cool, yellow undertones mean you’re Warm, and those of you in between are Neutral. So that’s tone—now let’s talk form. The foundation stick gives lots of coverage, and liquid lets you start minimal and build on it. Last but not least, powder pulls double-duty: Use it dry to minimize shine, or wet for fuller coverage.