I've been going to Serenity Med Spa Burlingame and few times in SF office, for over 10 years and now that Dr. Lisa Kang is no longer there I really don't recommend that med spa. I had received botox treatment with a nurse practitioner that has over 10 years experience and she did a lousy job. I was left with terrible bruising that took two weeks to heal even after I got a bruise healing treatment (bbl laser) after . My areas that are still of concern do not look much better after month and a half of botox treatment. (Marionette lines and nasial folds especially ). Spending almost 500.00 I would've expected much better results by now. Very disappointing..I really hoped I could continue going to that medspa and getting botox treatment after Dr. Kang retired.