Because the scalp needs cleansing and hair needs to retain its protection, and a shampoo with sulfates and salt usually achieves the former at the expense of the latter. Sulfates, such as SLS, strip away excess oil as well as the lipids that keep the fiber flexible and the skin comfortable. Salt is added to thicken the shampoo and can dry out the hair and dull the color. A sulfate-free and salt-free shampoo cleans any hair type well, without that cost. That is why all our shampoos are formulated without sulfates, parabens, or salt.
What a sulfate does
A shampoo cleans using surfactants: molecules with one end that binds to oil and another that binds to water. They surround sebum, dirt, and product residue, and the rinse carries them away.
Sulfates are the most widely used family because they are cheap, very effective, and produce a lot of lather. On the label, they appear as sodium lauryl sulfate (SLS), sodium laureth sulfate (SLES), or ammonium lauryl sulfate. SLS is so well-known for its ability to alter the skin barrier that in dermatology it is used as a reference irritant in tolerance studies.
The problem is that such a powerful surfactant does not discriminate. It removes excess sebum as well as the lipids that coat the cuticle and those that protect the surface of the scalp. With each wash, the hair loses flexibility and shine, split ends occur more easily, and the scalp can be left feeling tight or itchy.
What salt does in a shampoo
Salt, sodium chloride on the label, is not there to clean. It is used to thicken: shampoos with sulfates become denser when salt is added, and that texture is associated with quality.
In the hair, salt draws water out of the fiber and leaves a rougher surface. In color-treated hair, it accelerates color fading, and in hair with straightening or keratin treatments, it can shorten their duration. That is why hairdressers recommend salt-free shampoos after such treatments.
And the parabens
Parabens are preservatives: they prevent the growth of bacteria and fungi in a product that lives in the shower. Every shampoo needs a preservation system. We choose other preservatives, in line with our way of formulating from plants.
Why it works for all hair types
It is often thought that sulfate-free shampoo is only for dry or color-treated hair. In reality, a gentle cleanse works for any hair, because none needs to lose its protective lipids to be clean.
- With oily hair, which is washed often, what matters is being able to wash it frequently without irritating the scalp or drying out the lengths. A mild base allows for this.
- With dry or curly hair, which already has little protection, preserving what it has makes the difference between hair that tangles and hair that is easy to comb.
- With color-treated or straightened hair, without sulfates or salt, the color and the treatment last longer.
- With sensitive scalp, less aggression in each wash means less tightness and itching.
Tap water, on the other hand, is almost never the problem in Colombia: according to the water utility companies themselves, it is soft in Medellín (28 mg/L of calcium carbonate, EPM, 2025), Cali (27 mg/L, EMCALI, 2024), and Bogotá (the EAAB classifies it as soft water), and only moderate in Bucaramanga (70 mg/L, AMB, 2024). It is considered hard above 120. If your hair looks dull, it is most likely due to the cleansing, not the water, and a cleanse that doesn't dry out leaves less work for the conditioner.
Our shampoos
All our shampoos are sulfate-free, paraben-free, and salt-free. Each one is designed for a need:
The entire line is under shampoo, and the rest of the hair care is under hair care.
What about shower gels, cleansers, and soaps?
They also contain sulfates, and on the body and hands, the effect is more noticeable: they are washed more times a day and with hotter water. The mechanism is the same as in shampoo, a powerful surfactant that also removes the lipids from the skin barrier, with tightness, flaking, or itching as a consequence. Our solid shower gels, those in the Evasion line, and our liquid hand soaps are sulfate-free. We explain it in why you should also avoid sulfates in shower gels and soaps.
What to expect when switching
Our shampoos lather well; even so, if you are coming from one with sulfates, you may feel a little less lather. It is normal: the most abundant foam comes from sulfates, and the amount of foam does not measure how much a shampoo cleans. Distribute the shampoo on the wet scalp, add a splash of water to release more foam, and massage with your fingertips, not your nails. The lengths are cleaned by the foam that runs down when rinsing.
If you are coming from a shampoo with sulfates, for the first few weeks your hair may feel different as it balances out. Give it a month before deciding.
After the shampoo comes the care: the Density Fortifying Conditioner on lengths and ends, 1 minute and rinse (we measured -90% breakage during combing in an instrumental test), or the Repairing Botanical Balm, leave-in, for dry ends.
Frequently asked questions
What is SLS and why avoid it?
It is sodium lauryl sulfate, the most common sulfate in shampoos. It cleans and lathers a lot, but it also strips away the lipids that protect the hair and scalp. None of our shampoos use it.
Does a sulfate-free shampoo clean less?
No. It cleans more gently. You may feel a little less lather, but by massaging the scalp well, the hair is left clean, even if it is oily.
Why should a shampoo not have salt?
Salt is used to thicken, not to clean. It can dry out the hair, dull the color, and shorten the duration of a straightening or keratin treatment.
Are all Yves Rocher shampoos sulfate-free?
Yes. All our shampoos are sulfate-free, paraben-free, and salt-free.
If I have oily hair, does it work for me too?
Yes. It removes excess sebum without irritating the scalp, so you can wash it as often as you need.
