Dry, damaged lengths at the top of your beauty bugbear list? Allow us to introduce you to the No 0 Intensive Bond Building Hair Treatment (known affectionately by Team CB as a hair necessity)...

A supercharged addition to the range, the No 0 Intensive Bond Building Hair Treatment has the highest dose of patented OLAPLEX technology in any take-home product. Intended to work as a two-part process, the restorative No 0 formula acts as a primer to the No 3, amplifying the efficacy of both treatments to rebuild hair bonds, strengthen and protect your hair's integrity — that's not to say that it doesn't work on its own, but this dynamic duo is proof that teamwork makes the dream work. As always, the star ingredient is bis-aminopropyl diglycol dimaleate – sounds science-y but it will restore and repair chemical-treated, heat-ridden hair. Working its magic on all hair types and textures – as the whole OLAPLEX line does – this treatment works even if you’ve never tainted your locks with colour or tongs, but it's most beneficial to intensely damaged lengths; the more often No 0 is used, the healthier your hair will become. We're obsessed!