No formal studies on the effects of steam and melasma, so unlike you will get a scientific answer. We know that UV and hormones mediate this condition, but steam will have no effect on melanocyte activity (unless I am proved wrong by recent studies). Melasma is a very common cause of skin ...
Any treatment which causes significant trauma to the skin whether it is heat, cold or light can lead to scarring. Liquid nitrogen would not be my first option to remove sun spots with the availability of IPL and other light based sources such as a q switched laser which can limit collateral...
Thank you for your question, Melasma needs a combination approach to get the best improvement and will need a series of treatments. In our practice, we combine Clear + Brilliant, peels, microneedling/PRP, Aerolase, and sometimes Erbium (Cool Laser) to get the best results. See an expert for a ...