The clue "protective layer" last appeared in the Universal crossword on September 24, 2016. The correct answer for this puzzle is "OZONE", a 5-letter word.
Solution OZONE is our most searched for solution by our visitors. Solution OZONE is 5 letters long. We have 2 further solutions of the same word length.
There are 6 solutions. The longest is CARAPACE with 8 letters, and the shortest is SKIN with 4 letters.
Indeed, "PROTECTIVE LAYER" is among today´s most searched crossword clues (latest update: 02 Apr 2026). Many solvers are struggling with this one!
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Solutions are between 4 and 8 letters long.