The Schwarzkopf Professional BC Bonacure R-TWO strengthening hair treatment helps restore extremely damaged hair affected by colouring, perming and other chemical or mechanical treatments. Its vegan formula with transformative Double Bonding technology strengthens the hair and improves its resilience. The treatment penetrates deep into the hair fibre, rebuilds its structure and gives the hair a natural shine. Your stressed hair will experience a restart, become easy to comb, gain a healthy shine and be protected against further damage.