My hair is very frizzy not on top but just at the sides probably too much dyeing. Have just had it cut into a bob shape and longer at the front. Still frizzy at the sides. The hairdresser said not to use wax as it is heavy on the hair but to use serum but she never recommended anything. (And I never thought to ask!). Can any of you very helpful people recommend a light serum to put on the ends of my hair to sort the frizz please and it will look smooth. Thanks