I am a 28 year old female with a PWS on the left cheek on my face, I had treatment between the ages of 2-14 before I decided I did not want any more treatments. From memory it did take 7-10 days to go down. Kids are cruel and unfortunatly adults can be cruel too. I agree with missy, focus on the beauty inside you and let that confidence out to show others you dont care about what they think. It does get better as you get older and I have found it is great meeting kids with birthmarks and showing them yu can be confident without makeup and get on with a normal life.
hope this helps.