The andrew barton age defying 300w 500w air brush is designed for more gentle effective styling of ageing hair combining super ionic technology with magnesium oil infused ceramics for smooth shine enhancing younger looking results the 25mm 38mm brush heads add volume and shape with soft bristles and silicone for smoothness and shine model number 2768abu 25mm brush for creating lift and shape 38mm brush for adding body and volume soft bristles with silicone for superior smoothness a