How long do i have to wait to switch acne prodcts?

I am currently using Nuetrogena Acne Stress control but i have no results so i'm going to use Proactive.


*How long should i wait before switching products*How long do i have to wait to switch acne prodcts?
I Would Keep Using It, But Every Week, Use Less Quantity.


So This Week Use 3/4 Of What You Use.


Next Week Use Half Of What You Use.


After Those 2 Weeks Use A Pea Size Drop.





This Week Only Apply It 3 Times.


So Put It On Wednesday.


Then Friday.


Then Saturday.


Then On The Second Week, Put It On Tuesday.


Then Thursday, Then Saturday.


Then On The Last Week Use It Twice.


On Tuesday Then Saturday.


Then Wait About 2 Days. Then Use Proactive.