How many muscles do use when you frown?

The muscles used to frown are:

- Corrugator supercilii: This is the primary muscle responsible for frowning. It located between eyebrows.

- Procerus: This muscle connects the skin between eyebrows to nasal bone.

- Orbicularis oculi: This muscle is responsible for blinking and squinting. It has several parts, and the pars corrugator muscle fibers help with the frowning.