Finding the perfect foundation shade, especially for medium-deep skin tones, can be quite challenging, as I've experienced personally. Brands like NARS offer a variety of shades labeled with terms like MEDIUM-DEEP 2.75 or HAZELNUT, but it's often tricky to match these just by watching videos or looking at photos. Lighting and camera settings can distort true colors, making in-person testing almost essential. From my experience, visiting a physical store or salon, such as Ulta Beauty, gives you access to testers, which are invaluable for accurate shade matching. It's also helpful to understand the undertones—whether your skin is warm, neutral, or cool—since this affects how the foundation blends with your natural complexion. When I first tried finding my NARS match, I realized that even within medium-deep categories, subtle differences exist that can impact your final look. For instance, shades like MEDIUM-DEEP 2 and MEDIUM-DEEP 2.75 might seem similar, but one may suit your skin tone better for a natural finish. I also recommend asking for advice from beauty consultants who can analyze your skin tone under natural light and suggest the best options. Don't hesitate to sample multiple shades before making a purchase. Ultimately, patience and trying different shades in real-life lighting are key. Keep in mind that foundation should enhance your natural beauty without looking cakey or too dark. With these tips, matching your NARS foundation can become a smoother and more enjoyable process.