i copy the following ARTICLE FROM THIS WEBSITE http://www.ciao.co.uk/Listerine_Antiseptic_Mouthwash_Original__Review_5480774 , AND IT IS GOOD TO SHARE WITH ALL MY FRENS....
Listerine is much more concentrated than almost all brands of mouthwash. It's meant to be used diluted (four teaspoonfuls to a glass of water), and therefore will last many times longer than other brands.
So although a bottle of Listerene is slightly more expensive than other brands (though not much), it works out cheaper.
That is, if you *do* dilute it.
In practice, I admit, I often use it neat. When I'm in a hurry, I just can't be bothered to fill a glass with water. I put the bottle to the mouth, rinse, spit out. Done. I can do that because I'm living alone, so nobody objects to my mouth on the bottle. Used undiluted, it's very strong stuff indeed; so stong that most people won't do it.
If you are hurried sometimes and tempted to take a quick swig, have a look at which bottle you're grabbing.
I once picked the wrong bottle from the shelf: another translucent bottle the same height, also filled with an amber liquid. I filled my mouth with the stuff, swished it around cheeks and between teeth, and gargled my throat - it took me seconds to realise that the 'strong stuff' was - Dettol disinfectant!
The insides of my throat and cheeks burned quite a while, but suffered no lasting damage. When diluted properly - yes, I do that sometimes - the amber liquid turns the water milky-white. It still doesn't taste other than 'bitter medicine stuff'.
That's actually why I like the original. I've grown tired of all the mint, mint, mint and mint flavours of toothcare products. Listerine is available in various mint-flavours, but I like it to taste it like healthy stuff rather than like liquidised chewing gum. I guess my tastes are somewhat individual, but there you are.
Just how good it is at doing what it promises - providing "24 hour protection against plaque", "fresh breath confidence" and killing "germs that cause dental plaque and bad breath" is difficult to assess. After all, so many other factors play a role: How frequently and how thoroughly I've brushed my teeth, what I've eaten, the general state of my health. The long-term effects of effective dental care reveal themselves really only after several years. However, my mouth does feel fresh and clean.
I use it three or four times a day, usually after brushing my teeth and also after eating a quick snack when I can't bothered to brush my teeth properly. The Listerine Original Mouthwash is antiseptic. This means it can be used to treat disorders of the mouth and throat. A prime example is a sore throat: Use Listerine only lightly diluted, and gargle several times a day. It helps, and is cheaper than the sore-throat treatments you buy at the pharmacy. Besides, having it in the bathroom already means I can treat my throat as soon as it starts to get sore.
Listerine does not advertise this well known benefit on the bottle, perhaps because that would require licensing it as a medicine instead of a cosmetic product, and thus make it more expensive. Listerine suggest that the mouthwash is unsuitable for children under 12, probably on account of its concentration. You wouldn't want your toddler to swallow the contents of a 250ml bottle; though personally I think that sensible older children would be well able to use it responsibly. I guess it depends on how sensible your kids are.
I paid £2.29 for a 250ml bottle in a discount drug-store, which I think is very good value for a leading brande product of this strength