The regimen video indicates to use a little less than a fingertips worth of bp, but I see "pea sized amount" posted elsewhere.

I applied a thick fingertips worth of bp for the first 3 nights.

There was itching, drying, and slight redness that largely subsided after 30 or so minutes. One of my existing red (cystic?) bumps turned into a sizeable white pustule the next morning but has remarkably almost completely faded 24 hours after its appearance. All of my existing acne has flattened noticeably. 

I am about to apply the gel for the fourth time and I am not sure if I should maintain or reduce the dose. I feel mild itching on my cheeks which are free of acne and have always been dry. Is there any reason to keep applying bp to my lower cheeks if they have been clear?

I use cerave hydrating cleanser, neutrogena stubborn acne 2.5% bp, and a generic cetaphil moisturizer.

Thank you.