The Weleda Revitalising Hair Tonic is a leave-in scalp treatment formulated with rosemary oil for hair growth to refresh the roots while creating an optimal scalp environment for stronger, healthier-looking hair. First developed in 1921, this heritage formula uses rosemary oil for hair alongside Horseradish and Stonecrop to invigorate the scalp, support circulation and help maintain balanced scalp function, which is essential for healthy hair growth and thickness over time. The lightweight, fast-drying, water-based tonic is non-greasy and absorbs quickly without build up or residue, making it suitable for daily use and ideal for fine and thinning hair or scalps prone to irritation. Dermatologically tested and suitable for all hair types. Made in Germany, certified natural by NATRUE, vegan and packaged in glass.