Nowadays, most chemists still carry hydrogen peroxide, which is still a popular substitute for bleach because of its inexpensive price and eco-friendliness. But this germicidal substance is incredibly adaptable and has far more applications than most people know.
Mouthwash and toothpaste
Due to its natural oxidizing abilities, hydrogen peroxide makes a fantastic and inexpensive mouthwash that both cleans and whitens teeth. To use it for this purpose, mix three or four drops of hydrogen peroxide (between 3 and 6 percent concentration) with equal parts water and swish the mixture around your mouth for between 20 and 30 seconds. After spitting it out, rinse your mouth with plain water to remove any residue.
Hydrogen peroxide can also be used as a toothpaste (in fact, many toothpastes sold in natural health stores contain it as a main ingredient). As before, mix a few drops of between 3 and 6 percent hydrogen peroxide with equal parts water and brush your teeth using the mixture. Some people like to add baking soda or sea salt to it to improve its antiseptic properties.
Laundry detergent
Hydrogen peroxide is a potent bleaching agent and can make short work out of most laundry stains. It is also far less aggressive than commercial detergents, which usually contain unnatural chemicals that wear out clothing over time.
Simply add a cup of 35 percent hydrogen peroxide to a gallon of hot water and allow the clothes to soak in the mixture for between 1 and 2 hours. Many people have also experienced good results adding hydrogen peroxide to washing machines instead of bleach. Aside from removing old and new stains, it can also whiten white clothes and brighten colored clothes.
Dish washing
A few drops of 35 percent hydrogen peroxide mixed into a cup of warm water is a fantastic natural substitute to dishwasher liquids. As well as being safer and cheaper, the mixture is also much more effective at removing stains and ensures that glasses are free of spots and streaks. Hydrogen peroxide diluted to similar levels can also be used to clean the dishwasher itself.
Fruit and vegetable soaking
Hydrogen peroxide can remove harmful bacteria and chemicals from fruits and vegetables. To use it for this purpose, add a cup of 35 percent hydrogen peroxide to a gallon of cold water. Soak the thinner-skinned produce, such as lettuce, in the mixture for 20 minutes and the thicker-skinned produce, such as cucumbers, for 30 minutes. If you drain, dry and refrigerate the fruits and vegetables right after cleaning them; their freshness will be significantly prolonged.
Sources:
http://www.bobbyshealthyshop.co.uk
http://www.hydrogenperoxidemouthwash.org
http://www.sonnewald.org [PDF]
http://science.naturalnews.com