When should a comma be used between adjectives

The comma rule comes down to the difference between two kinds of adjectives: coordinate adjectives and cumulative adjectives. Coordinate adjectives are adjectives in a row that each separately modify the noun that follows (1), as in “heavy, bulky box.” Both “heavy” and “bulky” modify “box.” You can even rearrange the adjectives and say, “bulky, heavy box.”

Hope this helped