The N°2. Rejuvenating Hair Serum, part of the Rejuvenating Hair Extension Treatment, is a daily at home treatment to protect the hair extensions as well as the natural hair from ongoing damage. The second step prolongs the effect of the N°1. Rejuvenating Hair Therapy and detangles, seals cuticles and provides softness and shine.  

• Recommended to use after the N°1. Rejuvenating Hair Therapy  
• Special at home treatment  
• Leaves the extensions strong, soft and shiny