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Sodium Lauryl Sulfate (SLS) is a powerful wetting agent containing sodium, a highly reactive element which, when mixed with water, produces sodium hydroxide -- also known as lye. Not surprisingly, SLS is a staple in engine degreasers but also in toothpaste and soaps, in part because of its ability to foam.
A 1978 study published in the Journal of Oral Pathology revealed that a pronounced lack of folic acid, vitamin B-12 deficiencies and iron deficiencies may be to blame for the sudden development of canker sores. Yes, it is true that this study is now about 30 years old, but the odds are good that the human metabolism has not sufficiently changed to discount nutritional deficiencies as significant causes of canker sores.
A report published in the Journal of The American College of Toxicology in 1983 showed that concentrations of SLS as low as 0.5% could cause irritation and concentrations of 10-30% caused skin corrosion and severe irritation. National Institutes of Health "Household Products Directory" of chemical ingredients lists over 80 products that contain SLS and SLES. Some soaps have concentrations of up to 30%, which the ACT report called "highly irritating and dangerous".
Originally posted by nixie_nox
Do you find the biotene anywhere?