Silicones: Smooth but with a Bad Reputation—What's the Truth?

Ingredient Glossary · S

INCI: Dimethicone · Amodimethicone · Cyclopentasiloxane

Some people consider silicones to be the epitome of "fake skincare": they claim silicones seal the skin and only make hair appear healthy. The facts are less dramatic. Silicones are well-tolerated texturizers and protective films—with clear strengths, clear limitations, and a legitimate environmental debate.

What are silicones?

Silicones are synthetic compounds made of silicon, oxygen, and other building blocks. In the INCI list, you can recognize them by endings such as -cone (dimethicone, amodimethicone) or -siloxane (cyclopentasiloxane). There isn't "the" one silicone, but rather an entire family: ranging from volatile variants that evaporate after application and leave only a silky feel, to film-forming silicones that remain on the surface.

On the skin, they form a thin, breathable film. This film makes creams easy to spread, slightly reduces water loss, and protects stressed hands. In hair, silicones coat the hair shaft, smooth the outer cuticle layer, and make combing easier. Amodimethicone tends to adhere particularly well to damaged areas.

What the facts say

Four out of five bars: Silicones such as dimethicone have been used for decades, have been extensively studied, and are considered skin-friendly; allergic reactions are rare. They do not "nourish" the skin—they are protective and texturizing agents. This is not a flaw, but a function. In a good formula, they work together with humectants and oils, which provide the actual care.

The environmental issue

The environmental aspect is discussed honestly. Silicones are not readily biodegradable. For some volatile, ring-shaped silicones, the EU has therefore imposed restrictions that are being phased in gradually. Other silicones, such as dimethicone, remain approved. Those who want to minimize their release into the environment can specifically choose silicone-free products. This is a personal decision—not a matter of skin compatibility.

Silicones in the BONSANA lineup—for example

Frequently Asked Questions About Silicones

Are silicones bad for the skin?

No. Silicones such as dimethicone have been extensively studied and are considered very gentle on the skin. They form a breathable protective film that smooths the skin and slightly reduces moisture loss.

Do silicones build up in the hair?

Light silicones can be washed out with a regular shampoo. With fine hair and frequent use of styling products, some buildup may occur over time. In that case, a more thorough shampooing every now and then can help.

How can I identify silicones in the INCI list?

By endings such as -cone and -siloxane, for example, dimethicone, amodimethicone, or cyclopentasiloxane.

Why do some brands avoid silicones?

Mostly for environmental reasons, since silicones are not easily biodegradable. However, avoiding them isn't necessary for skin compatibility.