Here is a quick useful information:
The common problem to those problems (out of many) is lack of ZINK.
The easiest and most effective way to get big doses of it is: PUMPKIN SEEDS.
Add few pumpkin seeds to every course of your meal, snack during the day, and within a MONTH, you will see its going away... It might come, no guarantees.
How do we know? We've been around long enough, and skin is all we know ;)
Check out our- Dead Sea Mud