Hi.. scars can be treated with dermaroller / laser . Both gives good results.
You can go ahead with dermaroller because it is more cost effective and equally good results. It is done once in a month for 4 months. It is done under topical anesthesia without much discomfort .
There will mild redness post procedure. Ideally should get it done on a Friday evening so that you can return to work on Monday .
You will start seeing results from the first setting itself. For more queries consult a dermatologist
Once you have already done fractional co2 there are lot of options to consider for further improvement namely - tca cross, subcision, cryosluch, punch elevation, dermabrasion , prp and many other combinations. Read a bit about them and then consult a dermatologist. Any further treatment will have to be customised according to your need/ type of scar/ your profession/ downtime/ your skin type etc. Don't repeat fractional co2 atleast before 6-8 mths have elapsed since last session. ( for a scenario where 4-5 sessions are already done)
I would recommend you to go for following treatment options to get best results:
1. Strict sunprotection. Regular use of sunscreen
2. microneeling treatment at 3-4 weeks interval ll give you good results
3. meso botox (microbotox) session
4. deep chemical peel.
better to follow combined modality of treatment to achieve best results