* Skin Tone: This refers to the surface color of your skin (e.g., fair, light, medium, deep).
* Undertone: This is the subtle hue underneath your skin's surface. The most common undertones are:
* Warm: Yellow, golden, or peachy hues.
* Cool: Pink, red, or blue hues.
* Neutral: A balance of warm and cool hues.
It's important to match both because a foundation that only matches your skin tone but not your undertone can make you look ashy, orange, or just "off."