Trace most med spa adverse events that turn into legal problems back to their origin and you'll find the same thing with discouraging frequency: information that a rigorous intake should have caught — a medication, a condition, a prior reaction, a history — that was never surfaced because the intake was treated as a clipboard formality the patient filled out while the coffee brewed. The patient intake and contraindication screening process is the cheapest, frontline risk management an injecting practice has, and it's the one most practices systematically underinvest in precisely because it feels like paperwork rather than the protective gate it actually is.
This is general education for owners, not medical advice. Clinical screening criteria and contraindications belong to your medical director and protocols.