I currently use a salicylic acid (SA) cream and Quinoderm 10 (benzoyl peroxide).I use the salicylic acid twice per day and the Quinoderm once.This system has improved my complexion by about 50% from when I used a 2.5% BP solution.However, I still get medium sized acne on my neck. Each spot can take up to two weeks to go down fully. They often hurt. In other words: what comes up is a lesser amount than before but still ugly. Often, but not always, the spots turn into whiteheads.I would like to add another over-the-counter product to my regime to see if I can improve things yet further.What products do you recomend? I am in the UK.Many thanks!