After 2 weeks of use on varicose veins on my legs, I noticed a difference. I was obviously white without any tan and I did it at the maximum frequency and intensity day by day for half an hour with 45 minutes on my legs, almost all because I have them everywhere. After 1 to 1 and a half months, I did not notice the difference I desired because it takes a lot of time to see the minimum difference. You will definitely see a difference, others see a difference in their tattoos here, but it takes many months and a lot of time for each session. Personally, I would not buy it because it does not have any instructions anywhere, we assume what we should do and when, and you get desperate when you do not see any results.