Well I've used semi permanent dye . Obviously because there is no ammonia in it , it does WAAY less damage to your hair . I actually find that when I used it , my hair becomes shinier , smoother and even looks healthier . Maybe it's just because I think it looks better , but that's my opinion . It will still damage your hair a little , but hardly . It really depends how often you use it and everything . But in general it's much healthier than regular dye . I used a dye called Natural Instincts . I personally find it to be a really good semi permanent hair dye . I also do medium brown . The colour is called medium brown . And I think the number is 6 .. But to be honest I'm not quite sure . You could try that . I strongly recommend it . I definately liked the results . Hope I helped and goodluck . :)