Dear Ms. Lybrate-user, there are a lot of treatment options for treating post chickenpox
or accident scars. Starting from microdermabrasion, microneedling, lasers etc, you will definitely see a visible improvement but it does take some months before you can visualize the result. No treatment can produce an instant result. If you are indeed planning to undergo these procedures, start by using a dermatologist
prescribed sunscreen once in 3 hours esp between 7 am to 5 pm irrespective of whether you are inside or outside your house/work area. I hope this answers your query!