Sulfates in shampoos have become highly controversial. Sulfates are the ingredients in shampoo that cause the shampoo to lather. We've come to expect the better the shampoo lathers, the better the shampoo is, however some people disagree, claiming some people are allergic to sulfates.
Sulfates may very well be dangerous, too. Many natural health experts recommend avoiding any shampoos with the foaming agents sodium laureth sulfate and ammonium laureth sulfate as main ingredients. Laboratory studies show that products that end in "eth" such as sodium laureth sulphate, polyethylene glycol, oleth, myreth, ceteareth all test positive for 1,4-Dioxane, a proven cancer-causing petrochemical.
A favorite among bloggers concerned about sulfate-free shampoos, John Masters is a great company. If you don't have dry hair, consider other shampoos that fit your hair type:
Not everyone loves this shampoo, but those who do, really love it. They love the smell (think mango and coconut) and that it lathers well despite being sulfate-free. A little goes a long, long way. Some users on Makeupalley.com report that it dried out their hair, while others found their strands were left shiny and squeaky clean.
According to the Website this shampoo is extremely mild, has no fragrance and is made to gently cleanse and soothe the most sensitive skin. May be used for hair, face and body. Leaves hair noticeably shiny, soft and manageable. California Baby customers have reported excellent results with this shampoo in their fight against eczema, perioral dermatitis and other skin sensitivities.