If you want to achieve thicker looking hair, L'Oreal Professionnel Serioxyl Thicker Hair Treatment (90ml) is what you're looking for. Formulated with powerful ingredient Intra-Cyclane, it creates a new hair substance that thickens every hair strand to provide a visually fuller effect.

The quick and accurate and has been proven to help you achieve hair that is increased in diameter in an instant. -SA

Directions for use:
Apply on lengths and ends of towel-dried hair when needed