Sulfate Free Shampoo
Sodium Lauryl Sulfate is used in many hygiene products, including shampoo. It's very affective in removing oils and residue. Therefore, it is used in most shampoos.
Sodium Lauryl Sulfate is non carcinogenic and does not cause adverse effects in people. However, it has been shown to cause skin irritation with prolonged use. Sodium Lauryl Sulfate may worsen skin problems in people with sensitive skin. It's been shown to irritate the face with prolonged exposure.
Sodium Laureth Sulfate is used as an inexpensive foaming agent. It is considered safe at the levels used in cosmetic products. But it is known to be a skin irritant like other detergents such as Sodium Lauryl Sulfate.
Some products containing Sodium Laureth Sulfate have been found to contain low levels of a carcinogen called 1,4-dioxane. The FDA encourages manufacturers to remove this carcinogen, however, the law does not require it to be removed.
So Sodium Lauryl/ Laureth Sulfate, do not cause adverse health effects. However, they have been known to cause skin irritation. With this knowledge, you can then decide if you would rather use sulfate free shampoo. When it comes to the health of your hair, especially since hair and your scalp are very sensitive, it may be best to steer clear of any chemicals that may cause problems for them; even if you may not have sensitive skin. Precaution is the best protection.
Organic shampoo and conditioner will not contain these sulfates since they are synthetic. So if you are worried about harsh chemicals like these, organic is definitely the way to go.