Possible Clues:

• Is of profit, helps
• Takes advantage of or benefits from
• 'Ah, what - the sceptred race!/ Ah, what the form divine!' (W.S. Landor)
• Sounds as if a cover for the face is what helps
• If a five gets sick, this helps
• All over the face is, by the sound of it, what helps
• When keeping cover, reportedly is of use
• On the face of it, this, by the sound of it, is a help
• Makes use of saliva
• If a quintet gets sick, this helps