Go for a luxury brand like S Factor Smoothing Shampoo. Hair grows about an inch every two months so the age of your long locks could be years old! Smoothing Shampoo is a rejuvenating shampoo that softens, seals and strengthens. It contains Asian pear and papaya.
Combine this with the Smoothing Conditioner from the same range to close down your hair's cuticle layer to give a reflective shine!