A close-up of a sleek, 30ml airless dispenser for purple teeth whitening paste, with a small amount of vibrant purple paste emerging from the pump. The dispenser stands in a modern, minimalistic bathroom setting with clean white and silver accents, highlighting its premium feel. In the background, a radiant smile with gleaming white teeth is subtly reflected in the mirror, showcasing the whitening results. The glowing purple paste contrasts sharply against the white and silver tones, drawing immediate attention for a Facebook or Instagram ad.