Ignore the comment about circumcision. By the very nature of it, circumcision is a brutally cruel and highly destructive procedure that removes essential, healthy, vital, nerve rich tissue from the penis for no good reason.
The foreskin contains 20,000+ touch and pressure receptors that represent 75% of the sexually sensitive tissue on the penis. How could letting some hack in a lab coat slice this skin off make things better? It can't and it won't.
You simply cannot remove that much nerve enervated tissue from the penis and still expect it to function normally.
As the one more intellectual responded noted, the white flakes are smegma.
Smegma is a natural, healthy secretion of the foreskin/glans combination. Smegma conains Langerin,....a powerful anti microbial compound that wards off bacteria and keeps this area clean and disease free,...just like you are now.
When smegma begins to accummulate, it can manifest itself as white or yellow clumps or flakes around the rim of the glans and on the foreskin.
These clumps consist of dead skin cells, urine deposits, seminal secretions, and smegma. All 100% natural, and 100% water soluble.
Retracting and washing this area with soap removes ALL the smegma, leaving this area open to drying out and odour causing bacterial infections.
Retracting and rinsing with clear, clean shower water only removes the excess (water soluble) deposits,
leaving a micro thin layer to keep bacteria and odour at bay.
So you can see,...smegma is not the vitriol from hell we have been duped into believing. Smegma is a sign you are a normal, healthy young man.
Go to: www.norm.org and read about the reason and function of Smegma and the foreskin. You will see how very fortunate you are to still have yours, and how misguided are those who promote circumcision for any reason.
Good luck and I hope this helped.