Sulphate-Free Shampoo: Which Brands Are and How to Check

If you have ever searched “is my shampoo sulphate free” and come away none the wiser, you are not alone. It is one of the most common questions we get, usually from people with coloured, curly or dry hair who have heard sulphates are best avoided. The good news is you do not need to trust the marketing on the front of the bottle. You can tell in about ten seconds by reading the label, and this guide shows you how.

What sulphates actually are

Sulphates are the detergents that make shampoo foam up. The two you will see most often are sodium lauryl sulphate and sodium laureth sulphate, listed on the label as SLS and SLES. They are cheap, effective and lather beautifully, which is why they have been in shampoo for decades. The downside is that a strong detergent does not know the difference between dirt and the natural oils your hair needs. Used often, it can leave coloured hair looking faded and dry hair feeling stripped.

How to check if a shampoo is sulphate free

Turn the bottle over and read the ingredients list. If you see the words “sodium lauryl sulfate”, “sodium laureth sulfate” or “ammonium lauryl sulfate”, it contains sulphates. If none of those appear, and instead you see gentler cleansers like coco-glucoside, cocamidopropyl betaine or sodium cocoyl isethionate, it is sulphate free. The front of the bottle will often say “sulphate free” when it is a selling point, but the ingredients list is the part that cannot fudge it.

One quick note on spelling. British labels tend to write “sulphate” and American ones write “sulfate”. They are the same thing, so check for both.

Which salon shampoos are sulphate free

It varies by range rather than by brand, which is exactly why the label matters. A single brand will often sell both. The clearest example is L’Oréal Professionnel Absolut Repair Molecular, which is sulphate free and says so in the product name, while other shampoos in the wider Absolut Repair line use a traditional lathering formula. So “is L’Oréal shampoo sulphate free” does not have one answer. It depends which one you pick up.

The same goes for ranges like Bed Head, Matrix Food for Soft and Wella Fusion. Rather than memorise a list that changes every time a formula is reworked, get into the habit of scanning the ingredients. It takes seconds and it will always be right. You can browse the full shampoo range and check each label on the product page before you buy.

Do you actually need sulphate free?

Not everyone does. If your hair is fine, oily at the roots and generally healthy, a sulphate shampoo will clean it well and rinse clean. Sulphate free is worth switching to if you colour your hair and want the colour to last, if your hair is dry, curly or coily, or if your scalp is easily irritated. Many people also look for cruelty-free and vegan formulas at the same time, and if that matters to you, the product pages flag it. Have a look through the sulphate-free options in the conditioners range too, since pairing a gentle shampoo with a rich conditioner is where the real difference shows.

If you are rebuilding your whole wash routine rather than just swapping one bottle, our guide on how to choose the right shampoo and conditioner walks through matching products to your hair type.

The short version: ignore the front of the bottle, read the ingredients, and look for the sulphate words. Once you know what you are looking for, you will never have to guess again.