You asked about the safety of it? I don't see the word "safe" anywhere in your post, but anyway let's just pretend it's there. Of course it's safe, but I wouldn't recommend it b/c then you ruin the effects of revita which destroys the purpose of using it in the first place. This is why I said to use just the nano. Sorry, I had to spell it out for you like this in order for you to understand.