Dry and damaged hair can be revived by identifying cause of dryness and treating it accordingly. If the hair dye is the cause then switch to natural dyes and use a deep conditioner, opt for professional keratin treatment to restore sun damaged hair, and avoid using blow dryers and washing your hair too often. Consult your dermatologist to know more about the treatments. Watch Dr Rinky Kapoor giving tips to deal with dryness of hair in winters at:
https://www.youtube.com/watch?v=ZDbUmiZ3ReU