Would like to know :
1)Whether the pustules are only on the face?
2)Have they increased in number?
3)Are they itchy and have burning sensation?
From your description it appears that they are suffering from Cold sore
which is of viral nature and will subside in 7-10 days.You can apply calamine
for soothing effect and also get them examined for confirmation of diagnosis so that some antiviral
creams could be prescribed.