A clean, close-up shot of white teeth with a minimal swipe of vibrant purple toothpaste applied to the front teeth. The contrast between the glossy purple paste and the bright white teeth creates a striking visual. The background is soft and neutral, ensuring full focus on the teeth and toothpaste. The lighting is bright and natural, subtly highlighting the shine of the teeth and the smooth texture of the purple paste. Minimalistic yet bold, perfect for a sleek and modern ad.