Nano Keratin hair straightening help!

[pukkadodgy]

Hi everyone im a mobile hairdresser in the berkshire area looking to go on a training course to learn a nano keratin straightening system basically any system which doesnt use dangerous chemicals and has good reveiws.The trouble is all the training seems to be salon specific i.e no one off training courses for a mobile hairdresser.anyone out there can help with courses within a reasonable travel time from berkshire.and what systems do you recommend.many thanks deborah.