First of all I want to address the complaint that this is not the 30-day supply but a “trial” or “travel” size. It is the advertised 2 fl oz, but I have had no problems making it last a month. The 6 fl oz that some people are expecting is a 90-day supply (it’s actually a better deal too).
https://www.amazon.com/Proactiv-3-Step-Acne-Treatment-System/dp/B00X6ZNWGA