Best saline for lid scrubs?

[Eyeshaveit]

I have been using Novartus Eye Scrub followed by q-tip Baby Shampoo lid scrubs at night, but I recently stopped with the Baby Shampoo when I read about the possibility for irritation both of the eye lid skin and the tear film itself. Makes sense to me as I do have pretty sensitive skin as is. I'm continuing with the Eye Scrub, since it really does do a great job, and I trust that it's a pretty balanced formula made for daily use, and I manage to keep it out of my eyes pretty well.

For those that use saline on a q-tip for eye lid scrubs, what's the best kind of saline to use in terms of all the normal considerations (e.g. is non-preserved best? what else to consider?)

Thanks!