How long after CO2 fully ablative laser can I go to take a sun bath?

Thanks for your query. Co2 fractional laser comes with a downtime. After your scabs heal and your skin is rejuvenated you can go out in sun but with a good spf. A good sunscreen is mandatory after any procedure to prevent sun damage. There is never 0 chance of pigmentation in sun without chemical and physical protection. Hope it helps.All The Best

If you are insisting on tanning afterwards , why not undergo a fractionated CO2 vs the fully ablative. This will reduce your downtime and reduce risks associated with hyper pigmentation from suntanning right after the procedure. I suggest a good compromise for you is to undergo lighter fractionated micro peels, to minimize your risks of complications while maintaing your lifestyle. 

Thank you for an important question with a very simple answer, which is never.  You will be most photosensitive during the first 6-8 weeks, at which point sun exposure can induce transient inflammatory hyper-pigmentation.  After clearance from your Doctor, you can resume active outdoor activities, using SPF of 30 or greater, accompanied by other sun protection measure such as a hat, buff, scarf, etc.