Thanks so much for your feedback, we appreciate that our En-Root Scalp treatment is our highest priced product, this is reflective of the quality of the ingredients inside with over 12 oils and Salicylic Acid all in this one product it is definitely worth the investment. Each application should be between 3-5 ml meaning one bottle should last up to 5 months if used once a week. We hope you continue to see great results 💞