I recently have been given a prescription for a blood thinner due to some concerns about clotting. I found some various documentation that you shouldn't have laser with blood thinners but it is fairly basic in it's explanation ("You can't").
As I don't take "can't" for an acceptable answer, I thought I would ask if any others have either had laser hair removal while on a blood thinner or know of the "why" you shouldn't. My Google-Fu has come up with nary a thing. Perhaps all that exists is opinion without knowledge.
The only thing I can think of is a risk of severe bruising - maybe. Skin punctures don't happen with laser so I don't believe the warning would be about uncontrollable bleeding.