The Necessary™ | Care For Your Body | Care For Your Planet
The Rosemary Serum (90-Day Supply) is an advanced leave-in serum for daily use. A combination of 70% Rosemary Water, Oil, Extract and 5% Capixyl™ helps support denser, fuller, healthier looking hair. The Rosemary Serum also includes a micro-dose of plant proteins and essential ceramides. The Rosemary Serum is a clear, quick-dry, and no-residue serum. The Rosemary Serum smells like pure Rosemary. No fine fragrance has been added. The Rosemary Serum does not smell like the Rosemary Shampoo or the Rosemary Conditioner. Dermatologist-Tested. Hypoallergenic. Non-Comedogenic. Vegan. Color-Safe.
Clinical Study: 30+ Panelists | 90 Days Use Of The Rosemary Serum 1x Daily | Third-Party Verified Clinic | Q3 2025
- 70% Saw an improvement in Hair Density
- 74% Saw an improvement in Hair Fullness
- 74% Saw an improvement in Hair Health
- 74% Saw an improvement in Hair Thinning
- 77% Saw an improvement in Hair Strength
Fulfilled by Nécessaire, A Personal Care Company
