How does the window film make the bathroom transparent?

It's best to stick the toilet film outside. This needs a little more time. First, sprinkle water on the glass and clean it. Then tear off the glass film with glue. Sprinkle water on the glass and spread a glass film. Remember to flatten the membrane by hand. Then scrape hard. You can spray it with detergent and water, and then scrape it with your ID card or used bank card. Be careful, be sure to scrape beside it to prevent foaming.