OLAPLEX N°. 0. 5 Scalp Longevity Serum Treatment is a weightless scalp serum that targets visible scalp aging, strengthens the scalp barrier, and immediately hydrates to support softer, healthy-looking hair. Key Benefits: Immediately hydrates and soothes scalp Strengthens and protects scalp barrier...

Our professional-inspired treatment primes your hair for deeper repair and protects hair integrity. Use as the first step in a two-part at-home system with No. 3 Hair Perfector (sold separately) to strengthen and repair all types of damaged hair. Redesigned for a quick and targeted stream applicatio...