Been using this now for 3 weeks and the difference is crazy - I started with skin contact 15 mins once a day I then upped this to 30 mins for the last week I've been doing it. I found using it for 30 mins it has made more of a difference and have had 1 new spot in the past 7 days. Obviously will continue to use it as it's meant to be 8-12 weeks but nothing but positive results so far. This is a big difference from 1/2 new ones a day each morning. I have been using his alongside drinking 3/4 litres of water a day and cutting out junk food. I always found the sun massively helped my skin which is why I decided to use this light, I would highly recommend it to anyone who found the sun has a positive effect on their skin.