Cold exposure has been practiced for centuries without identified chronic harms in otherwise healthy individuals
Doctors use different types of lasers depending on your skin condition: Q-Switched laser For treating dark spots, freckles, melasma, and uneven tone
But McMullen from the AMA urges caution
[DOI] [PubMed] [Google Scholar] 11.Doessing S., Heinemeier K.M., Holm L., Mackey A.L., Schjerling P., Rennie M., Smith K., Reitelseder S., Kappelgaard A.M., Rasmussen M.H., et al
If you have sensitive skin, please do a sensitive test first
Pharmacological effects of exogenous NAD on mitochondrial bioenergetics, DNA repair, and apoptosis