Hello, so I started using the regimen in August and it has been so amazing. I was suffering with cystic acne and it was so horrible. When I first ordered the regimen I bought nutrogena on the spot acne treatment which if you dont know is bp. I used this until i got the regimen which took about a week and a half. I think that because I first started using nutrogenas bp that the Dans BP didnt really burn my face. Im sure this was becasue my face had gotten used to it. Dont get me wrong nutrogenas bp burnt like heck that week but im glad I used it first. Just a helpful tip. If you want to see my journey with the regimen check out my youtube channel luvlylori85.