A leave in conditioner such as Tigi Ego Boost will help to smooth and protect the hair against environmental damage such as harsh sun and wind. It will also help to seal split ends and carries on working until the next time you wash your hair.

Ego Boost:
http://www.the-salon.net/shop/product.php?categoryid=0&brandid=2&typeid=4&productid=66#displayproduct

A normal conditioner that you rinse out straight away is not as intense but it will help to seal the cutical after cleansing.

You would use both especially on damaged hair or if you're out in the sun.

A good combination would be Tigi Moisture Maniac and Ego Boost.

Thanks

Claire
www.the-salon.net