The good news is that when you're done with laser you may not need foundation at all.
The bad news is that I've tried extended laser treatment twice with two different companies, and THEY both concluded that my very light colored facial hair was not appropriate for laser. One even refunded all my money after 15 months of treatment.
The other bad news is my facial skin quality is a train wreck. Too much sun for too many years. I've had numerous actinic keratoses (pre-cancers) burned off with liquid nitrogen, and one basal cell carcinoma surgically removed. Ack!
Bottom line, I really need foundation to even out skin tones and cover scars.