“Why is it important to know the difference between warm, olive, cool, and neutral undertones?” Undertones are like your skin’s built-in color guide. They’re not about how light or deep your skin tone is—they’re about the subtle shades underneath that decide whether a foundation looks seamless or completely off. And here’s the thing: before we even pick up a brush or apply a single drop of makeup, we’re looking at undertones. That’s step one. Because let’s be real—if the undertone is wrong, the