HiSmile V34 Whitening Strips with PAP+ HiSmile V34 Whitening Strips combine a 2-in-1 whitening technology: optical colour correction and oxygen-based PAP+ whitening. The purple V34 colour-correcting technology helps neutralise yellow tones, instantly giving teeth a visibly brighter and more radiant appearance. At the same time, the PAP+ oxygen-activated whitening system targets surface stains to help gradually whiten teeth and improve overall brightness. The result is a combination of instant visual whitening and active stain-removing technology in one product. The pack contains 14 individual applications.