In this Guide
Some hair products are celebrated for their ability to make hair incredibly smooth and shiny, while others are avoided out of a fear of “silicone buildup.” In reality, many of the concerns around silicones are rooted in myths, but a few are valid professional considerations. Here’s what they really do for hair, and a transparent look at why I prefer to use them sparingly in my work.
What Are Silicones?
Silicones are a family of synthetic polymers derived from silica, a natural element found in sand. In hair products, they act as a protective coating. You’ll often see them listed on an ingredients list with names ending in “-cone,” “-conol,” or “-siloxane,” like dimethicone, which is one of the most common types.
How Do Silicones Work?
Silicones create a thin, protective barrier on the hair shaft. This barrier is excellent for several reasons:
- Frizz Protection: It seals the hair cuticle, preventing humidity from entering and causing frizz.
- Shine & Smoothness: By creating a smooth surface, it reflects light more effectively, giving hair a glossy, polished look and feel.
- Heat Protection: The barrier helps protect the hair from the high temperatures of styling tools.
The Truth About Buildup
The idea that silicones, particularly non-water-soluble ones like dimethicone, create a suffocating layer of buildup that irreversibly damages hair is, according to science, a myth.
However, what can happen is that if you use a non-water-soluble silicone and only cleanse with a very gentle, sulphate-free shampoo, the product may not be fully removed. This can lead to a feeling of residue that makes hair feel heavy or limp. Over time, this residue can also make it harder for deep conditioning treatments to fully penetrate the hair shaft, which could lead to hair feeling drier.
The good news is that this is easily managed. A regular shampoo with effective cleansing agents (surfactants) is designed to break down and remove this coating completely, preventing any residue from accumulating. The key is simply using the right cleansing product for the job.
Myths and Facts About Silicones
Let’s clear up some of the most common misinformation.
- Myth: Silicones suffocate the hair.
- Fact: Silicones create a protective film, not an airtight seal that would cause hair to suffocate.
- Myth: Silicones cause long-term hair damage.
- Fact: On the contrary, their primary function is to protect hair from external damage, such as heat, friction, and environmental factors. Any feeling of dryness or lack of moisture is a result of not properly removing the silicone, which can block new moisture from entering the hair.
- Myth: Silicones are impossible to wash out.
- Fact: Non-water-soluble silicones are easily washed out with a shampoo that contains effective cleansing agents.
My Professional Take
While silicones offer clear benefits for hair, their environmental impact is a valid and growing concern. As synthetic materials, many do not biodegrade easily and can persist in the environment after being washed down the drain. This is why, I have made a conscious choice to primarily use and recommend products that are silicone-free or feature water-soluble, eco-friendlier alternatives.
I believe in striking a balance between providing my clients with beautiful, healthy hair and taking responsibility for our environmental footprint. This doesn’t mean silicones are “bad” or “damaging”; it simply means I’m choosing a different path that aligns with my values.
Conclusion
Silicones are powerful tools in haircare, and when used correctly, they can be a great way to protect and smooth your hair. For me and my business, however, the environmental footprint is too significant. I prefer to use and recommend sustainable, high-performing alternatives that deliver exceptional results without the same concerns.
Resources
For a deeper dive into the science of silicones, you can refer to professional resources from the Journal of the American Academy of Dermatology and publications from the European Chemicals Agency (ECHA) on their environmental considerations.
