This method is one of the safest and most widely used methods of application in the world and is favoured by models and celebrities. The bonds we use are made from keratin, this is a natural material so wont cause allergies. However you are welcome to a patch test one week prior to your appointment. The bonds are safe as long as they are maintained and removed correctly. If the extensions are abused or removed by someone other than a trained professional then there may be damage caused to the natural hair.