10. False cures
Like all other health-related fields, this one has its dubious cures. Products containing high levels of silicone are sold with near- miraculous claims, and it is true that they will lacquer the surfaces of dry hairs and make them shiny for a limited time. However, the hairs are still damaged, and will look it when the product is washed off. Chemical damage usually is not reversible, and any attempt to do so only makes the problem worse.
Keeping these things in mind will allow you to avoid the common causes of hair damage. Chemical treatments can be used effectively, but only with a healthy dose of caution. Professional stylists are trained in these treatments, so it is always best to consult with one rather than striking out alone.