The Clue Lip ___: in a make-up box
The Answer GLOSS
The answer "gloss" fits the clue "Lip ___: in a make-up box" because lip gloss is a common cosmetic product used on the lips. It adds shine and color, making it a popular item in makeup kits. Since the clue specifies "in a make-up box," it directly relates to beauty products. Therefore, "gloss" is the perfect word to complete the phrase.