I have a vascular laser session scheduled and for the month prior to my appointment I have been wearing SPF 30 sunscreen any time I'm exposed to direct sun light. Even with the sunscreen application I notice some very slight coloring on my face because of sunny weather. I definitely do not have a tan or excessive sun exposure, however I'm worried if I should go through with the procedure or reschedule ? I'm unsure of exactly how much sun exposure is considered too much ? Thanks in advance :)