If I have Tailored Pheremones and I either try to Intimidate or someone tries to Intimidate me, do my TPs help the test? It seems to, since it refers to all social tests, and Intimidation appears to be a Social Test, but I wanted to make sure.

You have it right. Intimidation is a social skill, and as such any non-magical tests involving the skill can be influenced by Tailored Pheromones.

You might say that pheromones drive the subject in a mental state in which people are more prone to be manipulated good and for ill; I can tell you that it has happened me to meet girls that made my head spin, at the time I couldn't think clearly and if the girl tried to intimidate me the sheer shock alone would have me wimper (Ok I'm not motherlenguage so I've no idea if what I wrote is correct I just hope that the meening have come trought).