According to Facebook's rules for Apps and websites, we must provide the users of our app the instructions to follow to delete their user data. If you want to delete your activity related to the Pepuño Clothing website, you can do so by following these steps:
Log in to your Facebook account and click on "Settings and privacy". Then click on "Settings".
Go to the "Apps and Websites" section, where you will be able to see all your activity related to applications and websites registered in your Facebook account.
Check the box to the right of the Pepuño Clothing website and click "Remove".
Check or uncheck the boxes according to your preferences and click "Delete".