bleach burn!!!!

Abby

recently a family friend decided to dye my hair blonde, it definitely burned a little while doing it but we both just thought it was normal. after washing out all the bleach i noticed my head had little blisters. again, thought it would just die down. now i noticed that it’s scabbing. any ideas how i can help this so it heals in the best way possible ??? anything i can do to help because i’m super scared and anxious