When you simply must have big hair this pair of bodifying beauties turn up the volume to the max.

Mixing moisturising sandalwood with bergamot to control sebum production and give hair back its bounce, Osmo's Extreme Volume formula also includes provitamin B5 (panthenol) to smooth split ends and leave a glossy finish.

This Duo twin pack features a 1-litre bottle of Extreme Volume shampoo and a litre of the matching conditioner and is fantastic value, coming in at nearly 30% cheaper than the cost of buying both separately. Of course, at that price it's not only great for your salon, but makes a profitable retail product too.