Is Keratin Treatments Good or Bad for your Hair? The Today Show did an expose on keratin treatments. The Bottom Line? Keratin treatments do wonders on the texture of your hair! It allows women to wash and go without the ironing, products, blow drying and so much more. The truth is Formaldehyde is in so many products including nail polish and so much more. The Formaldehyde is activated when heated by the flat iron. It is the gas that is created that is a major concern not the actual liquid treatment. When performing the Keratin treatment the liquid is heated when flat ironing. The bottom line is to assure that the salon where you are getting the treatment is properly ventilated. If the salon is properly ventilated you should feel comfortable and safe. Keratin Treatments like Coppola Keratin Complex, Global Keratin, and BioNaza are perfectly safe if applied by a trained stylist with proper ventilation.