Subcision works for some( You might need more than 1 session on this?), But it then could go back down (sunken in) once again(leaving you back to square 1) do to loss of skin tissue from the inside of your skin do to the acne that did not heal properly which causes this damage.. If you just do subcision alone you might get most likely minimal results and still leave you frustrated. Like others have mentioned after Subcision (give or take 2-3 days after having subcission done) the suction method has help with improvement and also if you want your skin to stay level and not sunken in(thats if the suction method doesn't work for you) then go for Dermal fillers. I would avoid permanent Fillers as there is no correction for them such as Bellafill or silikon 1000 as lumps can occur do to migration(years down the road) leaving you worst off.

Juvederm Voluma last around 18-24 Months and is great for deep scarring such as rolling scars. Fillers or subcision by the way doesn't do much for ice pick scarring so don't bother paying fillers/subcision for that. Derma-rolling & or microneedling is better for ice picks and will save you a lot of $$$ than doing any lasers as the results are about the same if not better to do it at home derma-rolling them.