Don't over do the chemicals. Perms, color, relaxers cause damage. 
Brush dry hair. Use a wide toothed comb on wet or damp hair. 
Use a thermal protector when blow drying. 
Use cool heat if possible when blow drying. 
Use an acidifyer daily to close the cuticle layer of the hair. pH 3.0-3.5 
Eat a protein rich diet. Take supplements intended for the hair. See Fast Grow    Vitamins 
Detangle your hair with an acidifier starting at the ends and work to scalp. 
Use products with sunscreens on your hair. 
Apply one or two drops of safflower oil to the ENDs of your hair as needed to retain moisture. 
Rinse your hair with cool water.