This moisturizing leave-in by OLAPLEX provides instant results and continuous repair and protection from cortex to cuticle. No.5LEAVE-IN immediately seals split ends and promotes visibly healthier hair after one use. Go beyond hydration with OLAPLEX Bond Building Technology™ and High-Adhesion Sealing Complex.

Why you'll love it!

• Quickly hydrates, softens, and detangles
• Immediately seals split ends
• Continuously repairs and prevents damage from styling and heat up to 450°F