A sanitary towel for physiological liquids includes as topsheet layer a layer of nonwoven cotton (10) having density which varies transversely and provided with a first plurality of longitudinal lines (1) along which the textile has a higher density of fibers with respect to the rest of the textile, each of the longitudinal lines (1) of the first plurality of lines being alternated with a respective longitudinal line (2) of a second plurality of longitudinal lines (2) along which the textile has a lower density of fibers with respect to the longitudinal lines (1).