Hello Jolene,
Hair changes over time and sometimes its a case of staying away from chemicals for a while to give the hair a break and time to get into better condition.
My advice would be to not perm the hair for a while and see if that makes a difference to the overal quality of the hair.
Good Luck
The team at Matthewdavid Bespoke Hairdressing
http://www.matthewdavid.co.uk