This is the most helpful aspect of an FAQ page, and you will see plenty of search bars in the examples to come. Customers go to the FAQ page with a specific question in mind.
Search bars also cause related keywords to pop up in the results and can be a learning opportunity for the shopper. Without a search bar, customers can become lost and frustrated with the user experience.
Of course, don’t over-design your FAQ page, but add some brand elements so that the shopper feels that they are in the same decade when they click over to it. Think about designing bullet points to align with your brand, or simply use your brand fonts. Make it feel just as important as the rest of the website, because it is.