After over 10 years using proactiv, now in my mid-thirties with hormonal acne that only seems to clear up during pregnancy, I am only now learning about the regimen.
I just ordered my first kit. My only concern is the fact that I've been using either 5 or 10% BP and the regimen uses 2.5%. Am i inviting a breakout by stopping the 10%? I'm pretty nervous!
Are you spot treating with the 10% or applying it to the entire area?
I dont think its a good idea to spot treat with BP while following the regimen. Way to prone to wrinkle.
Not sure if switching from 10% to 2.5% as area treatment will cause an effect in acne occurrence. I believe sources cite they are both as effective, 10% is just way more drying than the 2.5% is.
Anyway good luck! Ive had great success with the regimen! 
Thanks for your reply 
I'm applying the 10% all over the areas I'm prone to breakouts, so mainly my chin and around my mouth. I've been doing this for about 5 weeks now, whereas priorly I'd only use a very thin layer of the proactiv repairing lotion (2.5% BP) all over my face and never spot treating. I've seen some improvement since changing how I apply the bp and since upping it to 10%, so hopefully dropping back down to the regiment's 2.5% doesn't set me back