:) Spoiled Princess

Simple answer want to tighten foreskin make your dick bigger :)

Never heard of anythign that will do this. But why would you want to tighten it? Your foreskin provides pleasure for both people involved and it helps in protecting the head of your penis and keeps the area moist in theory. If I remember correctly without foreskin the head of your penis would start to become desensitized over time of rubbing and friction against it.