Aesop 16.9 oz. Shampoo An enlivening shampoo with a suite of sophisticated ingredients, including Frankincense and Panthenol, to cleanse strands and scalp, and help effect soft, shiny, fragrant hair. How to Use: Pour a small amount of product into hands, then massage onto wet scalp. Rinse thoroughly, squeezing out excess water. Dosage: Typical dosage should be between 2-3mL of product (or 'one teaspoon'). The amount used will depend on hair length, density and desired result. Arom.