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For those who still don't understand: Foreskin

In general, the most suitable age for performing foreskin retraction is when boys are still young. This is because the genital organ has not yet fully developed, making it easier to manually retract the foreskin. For adult males, this method can still be applied, but it is only recommended in cases of mild phimosis or an elongated foreskin. It requires patience and must be done 2-3 times a day, continuously over a long period of 2-4 months to be effective.