Switching to a brunette hair color can definitely shake up your makeup routine. Colors that looked great before may suddenly feel off, and understanding color theory can help you adjust. For brunettes, neutrals, rose golds, plums, and berry shades often work beautifully. If your makeup looks off, consider your skin undertone and whether you're using warm or cool shades. Using colors that clash with your natural undertone or your hair shade can create that "off" feeling. Sunburn can also affect how your makeup looks, making shades appear uneven or too harsh. If you’re sunburnt, opt for more soothing, subtle colors and avoid heavy coverage that may highlight irritation. Also, adjusting your foundation or concealer shade to match your current skin tone after sun exposure makes a big difference. From personal experience, when I switched to brunette, I found that playing with deeper eyeshadows like chocolate brown and mauve and swapping warm peach blushes for cooler berry tones balanced my look. Don't hesitate to experiment with lip colors too—sometimes a simple switch to a mauve or wine shade can tie the whole look together. Lastly, consult with fellow makeup enthusiasts or professionals who can analyze your features and coloring—sometimes a fresh set of eyes can spot what you might miss. Remember, makeup is about enhancing your natural beauty, so take your time finding what feels right and have fun with the process!