Give your hair the love it deserves with our Reconstruction Treatment Mask. Infused with Kera Panthenol Complex, it helps reduce breakage, repair split ends and lock in moisture for a smooth finish. Product specification:. • Formulated with Kera Panthenol Complex. • Part of the Advance Techniques Reconstruction collection. How to use me:. Use once a week. Apply after shampooing, in place of conditioner, leave on for up to 3 minutes and rinse.