Perhaps some of us are not aware of this "carcinogenic" substance that has become a part of our life specially for those who like to stay clean all the time
Well here are the list of items that are involved with SLS:
Tooth-paste, Shampoos, Soaps, Mouth wash, Body wash, Shave cream, etc.
SLS is what makes all the foam when showering or washing (since it's a foaming agent), which makes us believe that this product is really effective as it dissolves the oil from our skin. But the fact is, SLS is also used for car washing products to degrease car engines
In other words, SLS is used for car engines & human skin! Which is not a balanced equation, atleast for me!
There have been a lot of debates regarding the effect of SLS, some believe it's true, others think it's just a theory. Personally, I strongly believe it has a negative effect, and I'd also say it is carcinogenic as many other things that we use/consume in our daily life.
Back in college, during my organic chemistry & bio-chemistry labs, my lecturer kept on giving us endless lectures on how we should be carefull & with full safety when dealing with SLS agents in our experiment, since it's carcinogenic.
Offcourse the amount of SLS we use is very little (in shampoos for example), but if the amount happen to increase or perhaps the extra daily usage, then that would still have an effect for sure. If not cancer, then atleast hair loss, or skin irritataion on the long term. Good shampoos include other conditioning substances to make it feel better, but it's just a commercial thing to me.
Subject is open for discussion.