I used this almost daily for 3 years. For what I paid for it, I expected it to last longer. Apparently I got a "good" on since others seem to die in a few weeks. This a.m. I plugged it in to charge it. After the blue light stopped flashing, indicating full charge, I pushed the button to turn it on but nothing happened. It's just dead. Not impressed. Also it did NOTHING for my skin. I kept hoping, though, which is why I continued to use it but can see ZERO difference after 3 years. I take excellent care of my health--skin, physical body, nutrition, etc. That is what accounts for my healthy skin. This useless POS does nothing. In addition, I've seen prices from $99 to $1700 on the same item. Obviously I'm just another sucker who fell for this scam. Also, the packaging is elaborate and expensive, probably to make up for the fact that this product doesn't do what it says it does. Probably made by child labor in some hell hole in China.