Sodium Lauryl Sulfate is a very common ingredient in nearly all shampoos, soaps, and even many toothpastes. You can even find it in Angel Food cake mixes. This is the ingredient responsible for the foaming action of the product. But, is it safe?
Until about a year ago, I thought the answer to this was yes. I had not yet done research on this chemical, but just in reading a few comments online, it seemed some people were OK with it and others were not.
When I finally had time to research SLS, I was surprised to learn it was contaminated with 1,4 dioxane. This is a cancer causing by-product of the ethoxylation process, a process that makes otherwise harsh ingredient gentle. However, because it is not an original ingredient, this by-product is not listed on the ingredient list.
In this article by Dr. Mercola, he further explains the health risk with using SLS, and its cousins Sodium Laureth Sulfate (SLES, and Ammonium Laurel Sulfate (ALS), citing some of the over 16,000 studies showing toxicity. The Environmental Working Group gives SLS a moderate hazard rating for cancer, organ system toxicity and others. So it’s not the worst, but not the best.
Should you avoid SLS?
Anything you put on your skin is absorbed directly into your bloodstream and goes directly to your organs. It’s also important to note that 1 incidence of using SLS is likely OK, but the cumulative effect is what is worry-some. While the amount in your shampoo, toothpaste, body wash, hand soap, etc. may be ‘safe’ amounts when used alone, using them all at one time could cause your exposure to jump into the unsafe level zone. But the cumulative effect has never been studied.
We do our best to avoid it in our house due to the cancer link. If you can’t avoid it entirely, limit your exposure by using less of the product containing it. Most people use twice as much soap product as needed.
How to avoid SLS
Read labels! Know what to avoid, as SLS can have other names, including Sodium dodecyl sulfate, Sulfuric acid, Sodium salt sulfuric acid. I use Dr. Bronner’s bar soap in the shower and make my own foaming hand soap, which also makes a great foaming body wash. For shampoo I am currently using Kiss My Face, Frequent Use which is SLS and paraben free and I love it.
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