There are so many different sulphates being used on the market today, making it impossible to give a general and definitive answer! There is always ongoing research concerning the risk of ingredients used in personal care products and our team takes this research very seriously. There are some sulphates that pose a risk to your hair and scalp, which is why they are included in our Haircare Ingredients Blacklist. Others might be risky for certain hair or scalp types or become dangerous when used too frequently.