Goldwell's Dualsenses Bond Pro Day & Night Bond Booster is designed to strengthen weak or fragile hair affected by daily wear, styling, and chemical stress. Powered by the advanced Bond Pro technology with an Inter-Amino-Bond-Builder, it works within the hair fibre to rebuild bonds and reinforce the hair’s internal structure. Enriched with strengthening soy protein, this lightweight treatment helps reduce breakage and split ends by up to 99% while improving resilience and manageability. Suitable for all hair types, including fine hair, the versatile formula instantly detangles and smooths damaged ends and can be applied to damp or dry hair throughout the day or left in overnight for intensive repair.