Ingredients

Natural Surfactants in Body Care

We’re all familiar with the ritual: rinse, lather, and repeat.

Our relationship with foam is so complex that we even celebrate National Bubble Bath Day.

But where does all that foam come from?

And is it safe to be slathered all over our bodies for crying out loud?

The good news is that it is safe, provided you use products formulated with natural surfactants.

In this article, we look at the surfactants used in our personal care products.

Understand their role, benefits, and how they contribute to a safer skincare experience.

Natural Surfactants 

The Science Behind the Foam

Surfactants are the key ingredients that make your bath and body products bubble and foam, transforming your daily routine into a luxurious experience.

Have you ever wondered where all that delightful foam comes from and if it’s safe to use all over your body?

The good news is that many of them are safe, provided you are using natural, skin-friendly surfactants like the ones discussed below:

You can also follow the link to read more about the role of surfactants in personal care products.

Surfactants in Bath and Body Care

Coco Betaine

INCI Name: Cocamidopropyl Betaine
Type: Amphoteric
Usage Rate: 5-40%

Lather: Coco Betaine is known for its high-foaming lather, often called “flash foam” in cosmetic science. This means it bubbles up quickly but tends to dissipate just as fast. It’s commonly found in bubble bath formulas, where the cleansing is secondary to the bubbly, foamy effect.

Description: Coco Betaine is a popular skincare surfactant derived naturally from coconut. It is considered a high-foaming surfactant, and while its rapid foaming capabilities might seem like a drawback to some, it is gentle enough to use in facial washes and baby products.

However, due to its flash foam nature, it is not suited to being the sole surfactant in a formulation. It can be blended with non-ionic surfactants to create a milder, more balanced product. This flexibility allows formulators to develop products that provide the right amount of lather without irritating.

Polyglucose

INCI Name: Decyl Glucoside
Type: Non-ionic
Usage Rate: 5-40%

Lather: Polyglucose creates a rich, creamy lather, a favourite in many bath and body formulas.

Description: Polyglucose is part of a new generation of surfactants.

Derived from sugar, it is incredibly natural and biodegradable. It’s mild and non-irritating, making it suitable for sensitive skin types. Polyglucose has similar characteristics to non-ionic surfactants, offering gentleness and mildness.

Unlike other surfactants, it is compelling enough to be used alone as a primary surfactant, perfect for those seeking simple, gentle cleansing. It also supports your skin’s natural barrier, making it an excellent choice for dry or delicate skin.

SCI Granules

INCI Name: Sodium Cocoyl Isethionate
Type: Anionic
Usage Rate: 5-50%

Lather: This surfactant is a fantastic foam booster, producing a dense, rich lather typical of anionic surfactants. It’s prevalent in shaving foams for creating thick, stable bubbles.

Description: Sodium Cocoyl Isethionate, often called SCI, is a gentle surfactant derived from coconut oil. It can be used as a primary surfactant because it cleanses without irritating skin. This makes it ideal for bath and body products, leaving the skin soft and moisturised.

Its gentle nature also makes it suitable for sensitive or dry skin formulations. SCI is also an excellent choice for solid cleansers, like shampoo bars and facial cleansing bars, due to its ability to create a stable, creamy lather that doesn’t strip the skin’s natural oils.

SLSA

INCI Name: Sodium Lauryl Sulphoacetate
Type: Anionic
Usage Rate: 5-60%

Lather: SLSA is known for producing large amounts of foam in bath and body products, creating a satisfying, bubbly experience.

Description: Sodium Lauryl Sulphoacetate (SLSA) is a natural surfactant. It is a mild, water-soluble powder that doesn’t irritate the skin, making it ideal for sensitive skin types.

This surfactant is excellent for creating fun, solid bubble bath products and body formulations.

SLSA is favoured for its gentle cleansing properties and ability to produce abundant foam. It allows you to enjoy a luxurious bathing experience without compromising your skin’s health.

It is derived from coconut and palm oils, making it a more natural and environmentally friendly option than other foaming agents.

To conclude. The naked chemist

Natural surfactants are essential to the performance and experience of your bath and body care products.

Whether derived from coconuts, sugar, or other natural sources, they are crucial in creating the lather and foam that make your daily routine enjoyable.

When formulated with natural and mild surfactants like Coco Betaine, Polyglucose, SCI Granules, and SLSA, bath and body products provide a safe, gentle, and luxurious cleansing experience.

By understanding the different types of surfactants and their unique properties, you can choose products that best suit your skin needs, ensuring that every rinse, lather, and repeat contributes to healthy, happy skin.

So, the next time you indulge in your favourite bath product, take a moment to appreciate the science behind the bubbles.

Because it’s not just about the foam; it’s about creating a balanced and beautiful experience for your skin.

14 replies on “Natural Surfactants in Body Care”

Hi! This article is very informative and helped my understanding a lot. I had one question: What is the difference between how the surfactants work? You mentioned that coco betaine bubbles generally dissipate quicker, why is that? I’ve been looking everywhere for an answer and I just can’t understand it. How do certain surfactants create bubbles that last longer, and others not as long? Do they work differently? Thank you so much.

First of all, THANK YOU for your amazing site! It’s obvious that pour a tremendous amount of time into this in order to help all of us. 🙂

I do have a question for you. Could you please explain Behentrimonium Methosulfate, and, specifically, why products containing this ingredient are labeled “sulfate free”? I’m certainly not a chemist, but I read that BTMS is actually used as an emulsifier and conditioner instead of a surfactant. But, wouldn’t it still be considered a sulfate? I’m so confused! :p Thank you! =)

Emma I really appreciate your feedback thank you, this site is something of a legacy it has to be said. Behentrimonium Methosulfate is not a surfactent it doesn’t foam or cleanse, it is used in a formulation to impart a slippery feel and help with sensory feel to impart a more silky feel to a product. i hope this helps. samantha

hello,thank you for the information very amazing website,but i have a question please i want to make a shampoo of my own and i am making a graduation project idea but i am kinda lost and i make my internship time in a cosmetic company and i do not know what do thats related to cosmetics but what i had in mind is to put an alternative surfactant ,do you have any alternative beside these that i could make an extraction of some kinda of food and use the substance as a natural surfactant please your help is highly appreciated

Hi Aya

Thankyou for the lovely compliment about the website, however I am so sorry but I just don’t have enough experience with surfactants to feel comfortable advising you in this area of formulation.

decyl glucoside is produced from reaction of glucose and fatty alcohol MOSTLY derived from coconut. You should mention the coconut as well, because some people are allergic to it.

DEAR samantha

do you have any idea about sarcosinate ?I am trying to formulate a natural shampoo for baby .could you help me to select a preservative for it that is natural?

tnx

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