- Works on all models of Ceriotti Bi hair dryers - Does not reduce airflow - Significantly lowers the noise and changes the tone to a more comfortable one Infinite life - if you replace your dryer just take the Silencer with you - 1 second assembly - just click it on The Silence Please is an incredible addition to the range. Significantly reduces the noise of a Ceriotti Bi hairdryer and consequently the noise in hair salons or in your home.