A hair conditioning composition/agent/ kit is provided adapted to favour long lasting conditioning effect on the hair and maintain lively hair for a longer period of time comprising formulations of selective organopolysiloxane molecules, with carrier solvent adapted to favour entering of reactive silicones in the hair cortex through hair cuticles to generate reacted high viscosity polymer which could be retained in the narrow passage between the hair cuticles for a longer time on hair surface even after number of hair wash and keep the hair more lively for a longer duration.
