Hello, I understand your concern for the blisters on the face due to sunburn. It is quite often seen that due to acute sun toxicity one might develop your kind of blisters. In your kind of cases it is most important thing to do strict sun protection so that further damage and progress could be halted and the acute part of sun sensitivity could be reduced. In my patents with your kind of problem I suggest them to do cold compression for two to three times per day. Application of calamine lotion helps in soothing the area. If there is any sign of pus then an antibacterial cream such as mupirocin can be applied over the area. In case of itching and discomfort an antihistamine such as cetrizine or loratadine can be taken for two times per day. All the best.