This Olaplex novelty is a treatment inspired by his professional steps to reinforce the action of No. 3 at home. It has been developed so that both products complement each other in the treatment routine. This intensive repair treatment is absorbed deeply into the hair to prepare it before the application of Nº3 Hair Perfector. It acts as a primer and prepares the hair so that the repair is up to 3 times more effective. The combination of No. 0 with No. 3 provides up to 68 percent more repair than just using No. 3. With a transparent gel-lotion texture, its formula is free of sulfates, parabens, phosphates, phthalates and gluten. Vegan, cruelty-free and pH balanced.