This brush is made up of: a handle (1); an aluminium tubular body (2) which is coated with an artificial plastic material, vinyl fluoride polymer, and holes (21) with polygonal shape, arranged in a herringbone pattern, which end in bevelling (21, 21b) and are arranged forming oblique lines in respect of the longitudinal axle of the brush; nylon fibres (41), ionized by means of radiation, fixed helicoidally to a supporting centre (4), located inside the tubular body, emerging the said fibres (41) through the holes (21) of the tubular body, and a front top (3) that closes the fore end of the above said tubular body.