. >> nerida joy is a world-renowned esthetician who's on the cutting edge of skincare.een treating celebrity clients at her beverly hills salon for years. here's what she had to say about natural advantage. >> when i first started using natural advantage, day one, i felt activity, and activity is working on live cells. you know, that's-- it's, like, for a lot of people they get nervous. so, day two, i noticed pore size smaller. this is impressive. i'm impressed with this. day three, basically texture-changing, a little brighter, brown spots a little lighter. day seven, you're feeling firmness, but what i found through using natural advantage was that the moisture content in my skin was really good. and it feels good. it feels really healthy. it was exciting to me that find something that you feel, "wow, this is-- i'm really impressed, you know, because it works." >> but seeing is believing. this is the half-face of a 40-year-old woman and the effects of time. notice the wrinkles around her eyes, the lines around her mouth. now, here is the other side of the same woman's