dr. gabrielle sabini about skincare and natural advantage.ell me about retinol, what we have in natural advantage. >> retinol actually goes deep into your skin, into your dermis, which is the layer below the skin that we see, and it stimulates things that we've lost as we age. it replenishes things that we need. it doesn't just make your skin look better; it actually makes it healthier. >> what makes our retinol different from the others? >> it's the delivery system. you have a microsponge technology that delivers the retinol to exactly where we want it in a concentration that's necessary, and what natural advantage does is it works with the body's own natural renewal processes to revitalize the skin, to rebuild the things that we're losing as we age. the advantage of this product is that it doesn't cause the irritation that the prescription retin-a's cause, and you can use this every day without having to take a break, without having to start every other night, as you do with the prescription retin-a's. >> i've seen a difference when, you kn