Wella Sp Volumize Duo This Volumize Duo from Wella works to inject volume & bounce into your hair whilst improving the texture & leaving your locks lusciously soft. Strengthening cleansing & providing a salon perfect finish this duo is sure to give you fast visible results. This set contains the following products: Wella SP Volumize Shampoo 250ml Wella Sp Weightless Finish 125ml