Abstract: The present invention relates to a toothpick for oral hygiene that has ultra-slim dimensions that allow deep, efficient and effective cleaning of the interproximal space, to remove the majority of food remains. The toothpick is formed from any type of flexible material and the shape thereof is formed by straight or curved lines or combinations thereof limited to the dimensions of the toothpick (length by width by thickness), providing properties of flexibility, ultra-lightness and ultra-fineness. The invention is mainly characterised in that the end sections of the toothpick are formed by straight or curved lines or combinations thereof, which narrow progressively, the ends thereof forming symmetrical or asymmetrical, regular, irregular, organic, hand-drawn or accidental figures with a diameter, axis, base, height, straight side, perpendicularity, cross-section or oblique section of less than 0.75 mm with respect to the width of the end section of the toothpick.