Face contouring is a powerful makeup technique that can transform your facial appearance dramatically. Whether you want to create a slimmer look resembling a 10kg weight loss or a fuller, more youthful appearance as if you've gained 10kg, mastering the right contouring methods can make a huge difference. For the slimming effect (-10kg), focusing on shading and highlighting is essential. Use a contour powder or cream two shades darker than your skin tone on the hollows of your cheeks, along your jawline, and the sides of your nose. Blend well to avoid harsh lines. Highlighting the tops of your cheekbones, the bridge of your nose, and the center of your forehead adds dimension and draws the light to the right spots. On the other hand, to achieve a +10kg effect that gives your face a plumper, softer look, emphasize blush in rich, rosy tones applied to the apples of your cheeks. Avoid heavy contouring; instead, use light, warm bronzers to add healthy warmth. This look is ideal for creating a youthful glow and enhancing natural fullness. In my personal experience, experimenting with different contour shades and brush types helped me perfect these effects. Using a beauty blender or a dense contour brush ensures seamless blending, which is key to achieving natural results. I also find that moisturized skin provides a better canvas for contouring products to glide on smoothly. Remember, contouring is not about masking your features but enhancing your natural bone structure. Practice these techniques in natural light for the best results and gradually build intensity according to your desired look. With these hacks, you can easily switch between a slimming face and a fuller, radiant glow depending on your mood or occasion.