In uncircumcised males, the shaft skin must be moved away from the glans manually, a process known as retraction, during the time it takes for the two layers to completely separate. Failing to do this consistently and until the process is complete will lead to the two layers of skin eventually growing back together.
This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.