What's wrong with this sentence? "He was brown haired, clean shaven, and had an engaging smile."
One or more hyphens is missing.
A comma is incorrect.
A word is missing.
Nothing is wrong.
Congratulations to 15% of you. The word "was" is missing before "clean shaven." This keeps the sentence parallel: verb, verb, verb ("was," "was," "had").
No hyphens are required because the adjectives come after the verb. They would be necessary if they came before the verb (e.g., The brown-haired, clean-shaven man was cute).
No comma error, either.