I understand your concern and from the information you have provided I can see three causes straight ahead 1. Hypothyroidism - it does affect even if levels r normal because eltroxin
is keeping them normal and not naturally 2. Hair coloring 3 straightening - even though you avoid the roots, the hair loses moisture and becomes brittle. Also I need to know if you oil your Hair or not, if not please oil them 2 / week 1 hour before shampoo or overnight. Get your HB levels done to rule out anemia
. Also start homeopathic treatment to control the fall and improve health in general. Be gentle with your Hair and avoid vigorous massage or rubbing of towel on Wet hair. Please feel free to contact me for any questions or concerns.