Aloxxi RRx Treatment Reparative Serum is step 1 in the RRx Treatment Regimen. It restores and protects hair. Have no fear, Aloxxis Professional RRx Treatment is here to strengthen, protect and replenish weak, damaged hair! Formulated with Advanced Recovery Technology, a blend of peptides, amino acids and conditioning agents, and ColourCare Complex, which is designed to protect from harmful UVA/UVB rays and help to keep hair looking young and vibrant, this treatment is the only prescription you need to strengthen dry, brittle strands and smooth the surface of damaged hair.