myusername
I call B.S.
Whitestrips contain peroxide, not hypochlorite (bleach).
Furthermore, a family friend who is a dental surgeon recommended them. (On my inquiry, not because I have hideous teeth, TYVM).
They do work, but they only fit over the front teeth (that are visible when you smile), so you still have yellow teeth in the back. If that bothers you, you could use one of the mouthguard systems (rembrandt?) or go have a dentist do it ($$$).
You call yourself BS ?
Crest Whitestrip's ingrediants
Purified water, Glycerin, Hydrogen Peroxide, Carbopol 956, Sodium Hydroxide, Sodium Acid Pyrophosphate,Sodium Stannate, Sodium Saccharin.
hydrogen peroxide
hydrogen peroxide, chemical compound, H2O2, a colorless, syrupy liquid that is a strong oxidizing agent and, in water solution, a weak acid. It is miscible with cold water and is soluble in alcohol and ether. Although pure hydrogen peroxide is fairly stable, it decomposes into water and oxygen when heated above about 80°C; it also decomposes in the presence of numerous catalysts, e.g., most metals, acids, or oxidizable organic materials. A small amount of stabilizer, usually acetanilide, is often added to it. Hydrogen peroxide has many uses. It is available for household use as a 3% (by weight) water solution; it is used as a mild bleaching agent and medicinally as an antiseptic. The 3% solution is sometimes called ten volume strength, since one volume of it releases ten volumes of oxygen when it decomposes. Hydrogen peroxide is available for commercial use in several concentrations. Highly concentrated solutions were first used in World War II by the military, e.g., in fuels for rockets and torpedoes.
It is used as a bleaching agent for textiles, e.g., wool and silk, and in paper manufacture. It is also used in chemical manufacture. Hydrogen peroxide is prepared commercially by oxidation of alkylhydroanthraquinones and by electrolysis of ammonium bisulfate. It can also be prepared by reaction of barium peroxide with sulfuric acid and is prepared (with acetone) by oxidation of isopropanol. Hydrogen peroxide was discovered (1818) by L. J. Thenard.
Sodium Hydroxide ;
Safety (MSDS) data for sodium hydroxide
General
Synonyms: caustic soda, soda lye, lye, white caustic, sodium hydrate, fotofoil etchant, NAOH, STCC 4935235, sodium hydroxide pellets, Lewis red devil lye
Molecular formula: NaOH
CAS No: 1310-73-2
EC No: 215-185-5
Physical data
Appearance: odourless white solid (often sold as pellets)
Melting point: 318 C
Boiling point: 1390 C
Vapour density:
Vapour pressure: 1 mm Hg at 739 C
Specific gravity: 2.12
Flash point: n/a
Explosion limits: n/a
Autoignition temperature:
Water solubility: High (Note: dissolution in water is highly exothermic)
Stability
Stable. Incompatible with a wide variety of materials including many metals, ammonium compounds, cyanides, acids, nitro compounds, phenols, combustible organics. Hygroscopic. Heat of solution is very high and may lead to a dangerously hot solution if small amounts of water are used.
Toxicology
Very corrosive. Causes severe burns. May cause serious permanent eye damage. Very harmful by ingestion. Harmful by skin contact or by inhalation of dust. Typical TLV 2 mg m-1.
You really should think before you speak, this is how you make yourself look foolish.