Many of us take up swimming as the main form of exercise but abandon it for the greenish color it gives to our hair.

Chlorine here is the major culprit, which when absorbed, bleaches the hair, destroying its sheen and flexibility.
To minimize the damage, you can wet your hair before entering the pool so that the hair absorb less chlorine and apply a lot of conditioner to the hair as a protective barrier.
You should always wear a bathing cap and never allow chlorine to dry on your hair.
To reduce the build-up of metals and remove the greenish oxidation from your hair, use a shampoo that contains the agent EDTA (ethylenediamene tetracetic acid).
Via fortwayne