Máscara facial con LED EMS Silk'n

I like it: I have been using the mask for about 6 weeks and I already notice some improvement in my skin - it has better texture, color and pores have become smaller. There is also a glow that wasn't there before. I think I have a better contour too. I find using the mask really relaxing, I even fall asleep sometimes. The EMS feels like a massage and I like the sensation. What is not clear to me is whether there is any risk to use the mask for a longer time. I enjoy having 2 or 3 sessions but the instruction says I should only use EMS 3 times a week per 10 minutes and LED up to 20 minutes per day. I would be grateful if you could clarify this. Thank you in advance!