I just got laser hair removal on my hairline and sideburns. I am Mexican and so I have medium/brown skin. They used the alexandrite laser on me, Is this bad because I have read that the YAG was better fitted for my skin color. ? Should I request for them to use the yag next time I go? I also walk to work everyday and I know sun exposure will cause some difficulties, how can I prevent this? When hair grows back can I shave it ?