Valera Diffuser DSN, , Diffusers for Women, The Valera Diffuser DSN diffuser helps you to create a textured hairstyle from the roots easily. Emphasise your curls and give them plenty of volume! Characteristics: gives your hair volume guarantees even drying of hair How to use: Attach the diffuser to the appropriate hairdryer. When drying, place individual strands between the rounded tips and lift them gently.