The best recommendation to last you over the summer period is a Keratin straightening process which will help recovery by providing the hair with nutrients from root to tip, while at the same time modifying the structure, leaving it straight, without frizz and with plenty of shine. Salerm Cosmetics Keratin Shot is the perfect treatment. Another idea which isn't as long lasting as using Keratin Shot is to use a straightening iron on your hair after drying with a hair dryer.