Kiehl's 'Magic Elixir' Hair Restructuring Concentrate - Used regularly, the potent concentration of rosemary leaf and avocado oils penetrates hair and scalp with therapeutic action to restore moisture, improve manageability, soften and boost natural shine. How to use: Apply a small amount to fingertips or directly onto dry scalp and hair using dispensing tip before shampooing. Wait 10 minutes for maximum benefits. Rinse thoroughly or shampoo. Use regularly to maintain hair health.