Use to Add a Fun Layer to Your Smartphone Photos
Puzzle 11 of Baking a Cake Hard Pack
Question is: Use to Add a Fun Layer to Your Smartphone Photos
and the answer is: FILTER
Word Meaning:
FILTER — A device which separates a suspended, dissolved, or particulate matter from a fluid, solution, or other substance; any device that separates one substance from another.
Definitions from Wiktionary.