Yes, you can have different delivery frequencies for your shampoo and conditioner. You can also change the frequency of delivery for your products at any time.
Go to the "profile" tab. "Settings" and "edit subscription" can be found here. Please click the "send confirmation email" button. You will be emailed a link to view and modify your subscription. Your active subscriptions are listed under "subscriptions". You can add products by clicking the "add products" button in the upper right corner.
By clicking "add products", you can choose the product you want to receive more often or simply buy it once. Furthermore, once you've chosen your products, you can change the delivery frequency or the date on which you will receive the product for the first time.