What it is: . A weightless scalp serum that targets visible scalp aging, strengthens the scalp barrier, and immediately hydrates to support softer, healthy-looking hair. Hair Texture: Straight, Wavy, Curly, and Coily. Hair Type: Fine, Medium, and Thick. Hair Concerns: - Visible Signs of Aging. - Flaky, Dry Scalp. - Scalp Buildup. Key Benefits: . - Immediately hydrates and soothes the scalp. - Strengthens and protects the scalp barrier and microbiome. - Promotes soft, shiny, healthy-looking hair. Highlighted Ingredients: - Olaplex Bond Building Technology: Relinks bonds to strengthen the scalp barrier. - Antioxidant-Rich Blend: Protects against damage that causes accelerated scalp aging. - Biome Barrier-Balancing Blend: Maintains a healthy scalp environment and optimal microbiome balance. Ingredient Callouts: Free of parabens, phthalates, and sulfates SLS & SLES. It is also vegan and cruelty-free. What Else You Need to Know: This first-of-its-kind, bond-building scalp serum strengthens the scalp barrier, balances the scalp microbiome, and targets visible scalp aging to set the foundation for a future of softer, healthy-looking hair. The serum is trichologist approved, dermatologist tested, and for all hair and scalp types. Clinical Results: In a consumer-perception study of 75 participants, results showed: - Visibly healthier and softer hair after 4 weeks. In a test, results showed: - Scalp is 5X more hydrated immediately after use. - Clinically proven to repair and strengthen the scalp barrier and protect from accelerated scalp aging. Size: One Size. Color: None. Gender: unisex. Age Group: adult.