Poison+Efficacy= + degenerative?

Hello! thanks for clicking!
If I place a poison support on a skill that did not had degenerative damage originally, will efficacy gives it %+ degenerative damage now that has a chance to apply poison?
If you managed, thanks a lot for answering!

Efficacy will apply to any damage over time effects you apply with a supported skill. It will not give the skill itself an additional damage over time effect, if that's what you're asking. In your limited example, it will make you do more with poisons that the skill applies and that's it.

Well, I just wanted to know if the poison damage that the skill will apply thanks to the poison support would be affected by efficacy. Putting as shortly as possible.
I think it will then? :)

Yes.

Keep in mind the skill you use has to do Physical and/or Chaos damage. Unless you have something that allows all types of damage to poison, that is still a requirement.