What is paraben free?
There's a chance that they're harmful. Studies have shown that some parabens can mimic the activity of the hormone estrogen in the body's cells, and whileestrogenic activity is associated with certain forms of breast cancer, parabens have been found present in breast tumors.
What is sulfate free?
sulfates, essentially, are what make shampoos turn into a thick lather in the shower. This ingredient, which is standard for most shampoo (and household cleaning) products, has additionally come under attack for causing frizziness (especially in curly hair) and damaging colored hair.