Restore and protect weakened hair with the Goldwell Dualsenses Bond Pro Pre-Wash Cortex Filler. Specially developed for damaged and colour-treated hair, the lightweight pre-shampoo treatment helps reinforce fragile strands while targeting signs of damage. Powered by Inter-Amino-Bond-Builder technology, the formula supports the hair fibre from within, helping reduce breakage and improve resilience. Hair is left feeling stronger, smoother and visibly healthier, with results that last for up to three washes.