Dry Chapped Foreskin
I've not been circumcised.
I am in a steady relationship and have been for 6 years.
I have chapped foreskin. It gets really irritated and seems like it wants to tighten up and not stretch over the head of my penis its so badly dry and chapped you can see the tears where its tightening up. The skin around these tears sometimes goes flaky.

Is there any over the counter anti-biotic that I can buy?

What is the best advice you can give, please help