Acne
"At the three month mark using the over the counter.

I posted previously. I  started out using once every three days and then went to every two days to make sure no issues, and eventually each day. 

Skin got very dry at first. 

I apply each evening about two hours before going to bed.

In the AM I apply Benzoyl Peroxide and then Neutrogena Oil-Free Moisture with Sunscreen SPF 35.  Wash and dry and re-apply as needed throughout the day.

At the 9 or 10 week period had a serious outbreak after a calm period, but it cleared up.

What works for me...

When applying Differin use an ample amount and massage into areas where you need it most.

My sun glasses were irritating my nose where the pads sit.  Turned out I was not making sure moisturizer was being applied in that region of the nose.

Same for around the eyes."