Hello 34 year old female here. I was injured a year and a half ago which resulted in a small gash on my forehead. It healed raised and hard. Over the past months I’ve been doing scar massage and using silicone scar tape. I did do a few Microneedling sessions where I did see improvement. Sometimes the scar looks flat and other times it looks raised as in this photo. Why is that and what can I do to truly flatten the scar?