To receive the full benefits of Aveda Invati, it's recommended to use the Invati Exfoliating Shampoo 1-2 times per week, followed by the Invati Scalp Revitalizer at least 3 times per week. Using the shampoo less frequently prevents over-drying, while the scalp revitalizer provides the hair-stimulating and follicle-nourishing effects. Consistent use helps boost circulation and nourishment for optimal hair growth