VO5 Plump It Up Conditioner VO5 Plump It Up Conditioner adds body & bounce to flat & limp hair. Infused with vital oils & extracts of collagen, this lightweight formula removes residue & lifts your hair from the roots, adding voluptuous body after just one use. With its gorgeous fragrance of cassis, hyacinth & passion fruit, VO5 Plump It Up Conditioner is part of a range of high performance volumising products.