I basically create levels for individual patients typically based on the amount of downtime they would like what we are trying to treat.Halo is completely individualized so the laser can be adjusted in so very many ways. There is no standard for "levels" this is just dependent on the...
I find that clear + brilliant with microneedling/PRP and skin care is the best for melasma. once its under control you can try something stronger like venus viva or fraxel or halo. often melasma can recur if you do something too strong to start. you should do peels in between...
Doxycycline can be used with the halo laser without problem. I often give antibiotics with laser treatments to prevent infection. Doxycycline is only sensitive to UV radiation not laser energy. Best, Dr. Emer.