I wanted to ask if anyone knew of a product to remove the brassy gold tones from the pieces after they have had a bit of wear and tear. I know a good product is the Back to Natural colour conditioners however I am in Australia and they are too costly to buy plus the shipping. I know there are plenty of "toners" and "shampoos" on the market that people use to keep their blonde hair looking great but are they going to have the same effect at replenishing the dark ash tones of a #6ash coloured (original colour) hair piece?