Are Silicones Bad For My Hair?
Why are silicones in my products anyway?
- It's cheap- sometimes an ingredient is used just to take up space (a filler) or because it's cheap. Mineral oil would be a good example. A manufacturer needs to use an oil. But, instead of using a more expensive oil, he uses mineral oil to keep his cost down.
- It's effective- an ingredient will be put in a product because it has the desired effect on your hair and/or skin. This might be an expensive ingredient or a cheap one, a natural ingredient or a synthetic one. Sodium laurel sulfate for example, is a synthetic ingredient (derived from coconut) that makes products foam and clean effectively. Manufacturers use it because people like products like shampoo to lather.
Manufacturers don't put things in products to purposely cause harm. While it's true that unscrupulous manufacturers will use cheap ingredients that don't work well, most manufacturers want their products to work as advertised. So, why do some of the best manufacturers use silicones if they are harmful?
Basically, silicones are put in products because they coat the hair with a thin water-proof (hydrophobic) covering. Putting this coating on the hair serves a few good purposes:
- It prevents the hair from absorbing humidity. While we want to have our hair get moisture, we don't want this moisture to penetrate the hair after we've flat ironed or pressed it which causes the hair to frizz or revert.
- While the hydrophobic (water-proof) coating keeps moisture out, it also keeps moisture in the hair, which we like. So, sealing the hair after moisture has been applied can be desirable.
- The coating is slick. So, it makes the hair easier to comb and smoother to the touch. It also makes the hair reflect light better- so the hair appears more shiny.
- Another benefit to silicones in products it they protect the hair from heat used while styling (blow drying, flat ironing or pressing).
Are all silicones the same?
No. As you would probably guess, not all silicones have the same properties. There are a variety of silicones from some that are pretty "heavy' and prone to building up to some that are relatively "light". One of the heavier silicones used in hair products is dimethicone or simethicone. It gives a great smoothing effect- the best. But, it can be hard to wash out. On the other extreme, cyclomethicone is very light and easy to wash out. It gives a slippery feeling to the hair while wet. But, after it's been rinsed out, you can hardly tell it was there.
How do I avoid silicone damage to my hair?
To avoid having silicones damage your hair, don't use products with silicones too often. If you use a shampoo, conditioner or styling product with silicones, switch up and don't use them too often. For people who wash their hair every day or multiple times a week this is extremely important. For people who wash less often, the build up from these products is not as troubling. Since most of our clients wash less than weekly, silicone build up from shampoos and conditioners won't be as much of a concern. But, even so you can occasionally use a clarifying shampoo or do a silicone removing treatment (see below) to be on the safe side.