Sulfate-free shampoo: what it is, for whom it is suitable and how to choose

Currently, many people are betting on sulfate-free shampoo. But do you know why? Dr. Flávia Basilio (CRM: 28624), dermatologist, explains that the cleaning capacity of a shampoo depends on the surface activity of its detergent (surfactant). “Most shampoos are based on anionic surfactants (sulfates), which are responsible for foaming. The most common is sodium lauryl sulfate (SLS), which has a low bioaccumulation profile in the body and is readily biodegradable,” she says.

However, explains Dr. Flavia, due to its high capacity to remove residues and even the natural oiliness of the scalp, sulfates can leave hair feeling dehydrated. Learn more about the characteristics of sulfate-free shampoos below.

Sulfate-free X sulfate shampoo

Dr. Rodrigo Pirmez (CRM: 52.89677-2), dermatologist Member of the Brazilian Society of Dermatology, explains that there are several types of surfactants (substances used in shampoos to promote cleaning). “Some are more capable of removing sebum and residue from the hair, as is the case with sulfates. Due to their high cleaning power, sulfates can make hair drier, especially pre-treated hair and hair that is naturally drier, such as curly hair,” he says.

Considering this, sulfate-free shampoos emerged. “They are developed by removing the anionic group, giving rise to the ‘low poo’ concept, which consists of products that use less detergent surfactants. The ‘no poo’ method (‘no shampoo’) consists of avoiding the use of shampoos when cleaning the hair and scalp and encompasses different cleaning methods. However, there are no studies that support the hypothesis of the method”, comments Dr. Flavia.

How to know if shampoo has sulfate

It is essential to pay attention to the product label. Dr. Rodrigo highlights that, in the list of components, the assets are usually listed in descending order of predominance. “There are different surfactants containing sulfates, such as sodium lauryl sulfate, sodium lauryl ether sulfate and ammonium laureth sulfate,” he recalls.

Dr. Flavia warns that completely abolishing the use of shampoo can cause other problems, such as excessive oiliness, seborrheic dermatitis, dandruff and even infections. “Still in this universe, there is the concept of co-wash (washing only with conditioner/gluing). This last method is not harmful to the hair. However, the function of a conditioner is very different from that of a shampoo, being inappropriate as a substitute for washing.”

All this reinforces that the ideal is to make an evaluation with a dermatologist, so that the professional can guide the best type of product for your scalp and wires, because the shampoo that is great for one person will not necessarily be good for another.

Benefits of sulfate-free shampoo

Is it worth betting on sulfate-free shampoo? Check out the main benefits attributed to it.

• Prevents hair from fading, leaving the color more vivid.
• Prevents scalp allergies.
• It is ideal for people with chemically damaged and/or dry hair, as it keeps the hair naturally more hydrated and looking more beautiful.
• It is a great option for naturally dry and more fragile hair (as is the case with curly hair), as it prevents the removal of natural oil from the scalp.
• Prevents hair breakage as it prevents drying.
• Avoid frizz.

One feature – which for some people may be a negative, but which, for others, is exactly the advantage – is the fact that sulfate-free shampoo does not foam as much. This is because anionic surfactants (sulfates) are responsible for foaming during washing. If there is no sulfate, there is no foam.

10 best sulfate-free shampoos

Check out the opinion of some people who use or have used sulfate-free shampoo.

1. Elséve Light-Poo

Indicated for curly or frizzy hair, it promises to wash, condition and model at once, leaving hair smooth and soft.

“In wet hair, the feeling is of that soft hair, when you finish moisturizing. On dry hair he left nothing to be desired for a shampoo and conditioner combo. His hair was left with clean roots, shine and satisfyingly soft ends!” – Bia Munstein

2. Post-progressive Bio Extratus Shampoo

It has a moisturizing formula, rich in plant ingredients. It is ideal for intensive hair treatment with progressive, as it promises deep repair, nutrition, hydration and shine.

“…because I’m using a line suitable for progressive hair, I notice that my strands are super-aligned, in addition to being much more shiny and hydrated.” – Bruna Munhoz

3. Deva Low-Poo Sanitizing Conditioner Conditioner

Enriched with botanical products, it has little foam and guarantees to fight the accumulation of dirt without dehydrating the wires. It has a soft and sweet fragrance of carambola and mango.

“It doesn’t have heavy sulfates, cleans gently, doesn’t dry or tangle the wires. Although mild, it cleans efficiently and promotes foam (little, but it does), a fact that makes it a well-tolerated product for those who are still not used to foam-free hair hygiene…” – Karina Viega

4. Natura Enveloping Curve Shampoo

Shampoo with creamy formula with low foaming. It promises to clean without damaging the health of the hair.

“The shampoo is great for curls, as it does not dry out the locks and is easy to apply.” – Fernanda Ferrelli

5. Less Poo Yamasterol

It was specially developed for those looking for a gentle cleaning, with little foam. It promises to clean the scalp and strands while preserving the hair’s natural oiliness.

6. Low Poo Bio Extratus

Shampoo that promises a delicate cleaning of the hair and scalp, ideal for curly hair.

“I really liked the product and found it to be a little reminiscent of sulfate shampoos as it creates foam and leaves a very nice clean feeling.” – Maressa de Souza

7. Color Fixation Surya Shampoo

A vegan and plant-based product, which has mild surfactants that gently cleanse the strands.

“The shampoo is yellowish but transparent, that made me very happy. It is like the Vizacaya Shine and Softness Shampoo, even though it is transparent, it moisturizes well and cleans the hair. I loved it so much!” – Nicole Make

8. Jaborandi Phytoervas Shampoo

https://www.drogariasaopaulo.com.br/phytoervas-shampoo-fortalecimento-total-250ml/p

Especially indicated for weakened and brittle hair. It promises an effective cleaning and revitalization of the wires, leaving the hair silky, shiny, soft and more resistant.

“I have chemically treated hair, so care is more intense around here, and the Phytoervas line helped me a lot because it has Jaborandi in its composition…” – Brunella Vettorato

9. Amend Color Reflect

Shampoo based on rice protein and Aminocolor, without sulfate and without salt. It promises to clean the hair fiber without harming the color intensity.

“This line is wonderful, leaves hair incredibly soft, aligned and fragrant (smells great!).” – Cristina Boldi

10. Oro Argan Monoi Bioderm Shampoo

It ensures more hydrated and tangle-free hair, in addition to shine and more protection for the wires.

Today, there are several options for sulfate-free shampoo on the market. And checking product reviews is always valid to make a good choice. However, it is good to remember that each hair has its particularities, so, if possible, prefer the shampoo indicated by your dermatologist.

Top questions about sulfate-free shampoo

As the use of sulfate-free shampoo is relatively new, it is common for people to have doubts about the product. Clarify the main issues below.

1. Sulfate-free shampoos are suitable for which types of hair? Dr. Rodrigo points out that they are good options for chemically damaged, dry or naturally dry and more fragile hair, such as curly hair. “This is because they tend to remove less natural oil from the scalp, which is especially important in protecting the hair in these cases”, he recalls.

2. Are all sulfate-free shampoos milder than sulfate-free shampoos? “In general, yes, because other surfactants will be milder than sulfate. However, shampoos are a combination of agents, and the addition of conditioning agents, for example, will also influence this issue of softness”, answers Dr. Rodrigo.

3. Do people who use sulfate-free shampoo need conditioner? This will depend on the specific shampoo (other agents added to the shampoo) and the person’s hair type, points out Dr. Rodrigo.

4. Does Sulfate-Free Shampoo Really Cleanse? Yes, as other surfactants are added to promote cleanliness. “However, each hair and scalp type needs a specific degree of cleanliness. In some cases, we do need shampoos with a higher degree of cleaning”, explains Dr. Rodrigo.

Dr. Flávia emphasizes the importance of an accurate assessment of the condition of the scalp and wires. “This is essential to determine the frequency of washing and the type of product that should be used. It is very common to find scalps with excess oiliness, but there are also those that are dry and sensitive”, he concludes.

Now you know that sulfate-free shampoos can be beneficial in some cases, but they are not necessarily suitable for all hair types. The ideal is to be in contact with a professional you trust who will recommend the best product, taking into account the particularities of your hair. Learn more about No poo and Low poo techniques.