Hi, several months ago I had a hair system fitted by a salon. At some point I'd like to learn how to do my own maintenance, but am happy to return ever few weeks at moment for a re-install. The system is a mixture of bio and synthetic hair (I was told that grey is very hard to source for bio hair??). I've had different hair dressers each time I've been, and some are happy to use a hair dryer on synthetic hair and others say it is best air dried. After washing my hair at home I've got into the habit of using a very low heat at a distance to just get excess moisture out and then let it air dry. I just wondered if there are others here who have synthetic hair (either a mixture like mine or fully) and if so what you do and would recommend. My only concern is whether air drying might weaken the bonds or damage the hair, but that does not seem likely...or any more likely than on a humid day. Thanks!