Why do you think they need lubrication?
Is it the brake or shift mechanism?
I would check the brakes and derailleurs to see if they are binding. You can manually move the derailleurs a little (to slacken the cables) and pinch the brakes to make sure they move freely. Make sure that cables/housing have not been kinked.
I make it a habit of doing a little light winter maintenance by hitting all of the brake and derailleur pivot points with a tiny amount of light oil, running through all of the gears and playing with the brakes a few times and then wiping away the excess oil with a paper towel. (and also giving the whole machine a good cleaning). And do an over all assessment to see if there is any rust/corrosion, especially if you rode in the rail or wet conditions.
I'm not familiar with those brifter, but if you can remove the hoods, do that before any lubrication. Some plastics/rubber materials do not like some oils. I dislike WD-40 for this reason.
~Monkey~