Each bottle of the treatment should be sufficient for about 2 months of use with proper use. We recommend applying just a pea-sized amount at night, or JUST enough to cover the face! Please note that The Spot Cream and The Night Cream are not meant to be used on the neck and chest area (try The Neck Cream!). You can also try applying the treatment with moisturizer to facilitate application. As this is a prescription medication, you should not need a lot for it to be effective!
Please kindly refer to your dermatologist's instructions, or consult with them if you are considering increasing use.