Hello, I am now21 years old, and I take on the arguments with one, in each of my foreskin erection, the glans penis fully retreated behind Thank you so much for your help!

• 你好，我现在21岁，我服用理跟1个月了，我的包皮在每次勃起后，完全退到龟头后面，非常谢谢你们的帮助！