I have never used that so I don’t know. You can try Vicks or Nustock Cream, that are bad tasting and may prevent pecking. But again, try to find the reason they are pecking. Cannibalism can be a result if chickens are overcrowded, bored or not getting enough protein. The balanced chicken feeds are best for them, and a 20% flock raiser/all flock feed may satisfy them better. If you use that, put some crushed oyster shell out in a separate container to help supply enough calcium. In desperate situations, separate the aggressor. Pinless peepers are used on the bully by some people to prevent them from aiming and pecking. Here is some reading on those:
https://www.backyardchickens.com/threads/pros-and-cons-of-pinless-peepers.1629317/