Olaplex No. 0.5 Bond Building Scalp Longevity Treatment – Hydrates & Soothes Scalp, 50 mL

Olaplex No. 0.5 Bond Building Scalp Longevity Treatment is a weightless scalp serum designed to hydrate and calm the scalp while supporting a healthier environment over time. Suitable for all hair and scalp types, it aligns with professional standards: trichologist approved and dermatologist tested. This easy, fast-absorbing step fits into varied routines, from busy mornings to relaxed evenings, without weighing hair down.

What this serum does

• Instantly hydrates the scalp and soothes dryness for a comfortable feel.
• Helps strengthen and protect the scalp barrier and microbiome, creating a steadier foundation for hair health.
• May contribute to soft, shiny, and visibly healthier-looking hair over time.
• Contains an antioxidant-rich blend of Lavender Extract and Tazman Pepper extract to support the scalp environment.
• Biome Pro-Balancing Blend supports a balanced scalp to maintain overall hair health.

The formula leverages OLAPLEX Bond Building Technology to re-link disulfide bonds within keratin, reinforcing the outer layer of the scalp and helping the product work with your hair’s natural structure. In addition to hydration, the serum emphasizes a protective approach to scalp aging as part of a broader care routine.

Key ingredients and benefits

• PATENTED Bond Building Technology aimed at supporting the scalp barrier.
• Lavender Extract and Tasman Pepper extract offer antioxidant protection for the scalp environment.
• Biome Pro-Balancing Blend to help maintain a healthy scalp ecosystem.

Brand notes include practical performance claims such as immediate scalp hydration, an improved barrier over time, and softer-looking hair with continued use. While results vary, the product positions itself as a lightweight, non-greasy option that can be integrated with other Olaplex bond-building steps for a cohesive care routine.

How to use

• Dispense a small amount onto the scalp and massage gently, focusing on areas of dryness.
• Use on wash days or as needed for extra hydration; follow with other Olaplex bond products if desired.
• Allow the serum to absorb before styling to keep hair lightweight and lifted.

Who it’s for

Designed for all hair and scalp types, including coily, curly, straight, and wavy textures. It is trichologist approved and dermatologist tested, offering a professional-grade option for ongoing scalp care.

What you might notice

• Immediate feel of hydration and scalp comfort after application.
• Longer-term support for a calmer scalp environment and potentially softer hair texture.
• Consistent use may align with the brand’s reported improvements in scalp hydration and barrier condition over weeks.