export user input to user input on another page?

i am so close to creating custom search bar for my store,
i have the input box in my header, along with a button that when pressed opens up my product page which has a repeater set with a search function on the repeaters that are connected to my product database.
i need the search bar on the header to export the data or mirror the data that is entered into the input box on the products page, then when the customer clicks the search button it opens the product page with the results.
plleeeeeeeeeeeease help!