When is it safe to be in a sauna after a tummy tuck?

In my own practice you'd be permitted to return to a sauna as soon as the sutures will remove. However the only opinion that matters is that of your surgeon.

Lack of cleanliness, and hot temperatures of the sauna can expose you to burns if you lack sensitivity and to infection if your incisions have not healed.  I generally ask patients to avoid public bathing options for at least six weeks. Ask the plastic surgeon who performs your TT for advice as he or she will know how your scar tissue is healing. 
Kenneth Hughes, MD, Board Certified Plastic Surgeon
Los Angeles, CA