This depends on the type of face mask you are using. Even among hydrating face masks, there are many different types with different ingredients.
In acne prone skin, we should use products that are non-comedogenic and oil free so that they do not clog the pores. Some face masks may have added ingredients and these can sometimes irritate the skin or cause an allergic reaction.
So if you have a hydrating face mask that is non comedogenic and that does not cause irritation, it should be fine to use them.
Stop if you develop any worsening or acne or redness.