Cream with Conditioner to restore lost colour. Grecian 2000 cream reverses the greying process.. Grecian works with the hairs natural chemistry to produce a similar acting pigment where the melanin used to be. It combines with the hairs protein inside the hair shaft to gradually add pigment back into the hair.... in reverse of the greying process. Grecian will work for any colour hair because you control the process so you determine when the colour is right. You can even keep a little grey around the sides if you like.