this is where the main sweat glands, hair follicles, and primary blood vessels of the skin reside. ifthe follicle end is anchored in the hypodermis.ez loucas: a lot of people don't think of the skin as an organ, but the skin is largest organ in your body and all of these layers in the skin all interact and are intertwined to make it an extremely efficient functioning organ. [music] dixon: regeneration of the skin slows as we age. the epidermis replaces itself every 16 days or so when we're young. but by the time we turn 35, the layer is only replacing itself once a month. loucas: what happens to your skin as you age is your skin slows down. so the production of collagen slows down. the collagen that you make is not as abundant. it's quality is less. it's frayed, it's broken. lana: so if you can't make collagen and the collagen goes from nice, straight pillars to cross linked, and you can't pump them out fast enough, you can't replace that well. you know that's what aging skin looks like it's collapsed, the surface is not smooth. because smooth skin there's pillars like this and the

we grow one hair per follicle. they grow 50 or more.'t live on them, it would suffocate. they also use their hair as a defense mechanism. if a predator, and they have a lot of them, grab a hold of them, they'll usually ont get hair and they can release a whole luclump to get away. they take good care of their hair. for pet other than, should you provide dust. they take dust baths. they get excited about the dust. they roll around in the dust and it absorbs the moisture and the oil in their hair to keep it nice and soft and dry. isn't that the coolest thing? so that's the chinchilla. now it takes 100 to 200 of these to make a fur coat. isn't that terrible? they're only in captivity. they don't exist in the wild. >> let's separate the chinchilla from this guy. >> yes, the kchinchilla could b lunch with this guy. >> you know i'm not great with exotic animals. i prefer -- >> i love you. this is an american alligator. they exist -- >> seriously, it turn his head the other way. >> oh, all right. he's not going to hurt you. people keep these a

eventually it kills the hair follicle and you don't have any more hair.it's good. >> our next item toothbrushes sans toothpaste. >> they have a solar panel on the bottom. when you put it under water the ians a ions are activated. it's great for travel. >> so it's light that remove it is plaque. people want the fresh feeling. does it have that? >> it's not the same. i think people really like the taste of toothpaste in a way that makes you feel fresh. this will kill the bacteria and will have the same effect, but not the sensation. people may not want to get rid of the toothpaste yet. >> or maybe use mouthwash. this is an exciting idea. this gives you a 3-d image of yourself. >> right. this is a 3-d imageer from vectra 3-d. this is coming to plastic surgeons and dermatologists office and will show you what your face lksik from angles. >> do we wan to know? >> i know. it also shows under the skin. so it shows impending sun damage that hasn't shown yet and the way fat has moved around as you have mirror. maybe you don't want to see it. i don't. but it could