Silica In Skincare?

We've heard about carcinogens and microplastics in skincare, but what is silica? Should it be avoided? Does it actually benefit the skin? Let's dive in.

Background:

For the most part, silica is naturally derived from the compound silicon dioxide. There are three main types, amorphous, hydrated, and crystalline (shown in the image above, this is not commonly used in skincare). It is used in cosmetic products to help with product consistency and even provide some skin benefits. Some of these include moisturizing, absorbing excess oil, and exfoliating.

What is Nanosilica?

Nanosilica is used in a variety of contexts and has been investigated for its efficacy in skincare. Like silica, nanosilica can help manage oil levels and help the absorption of the product. However, it is a nanoparticle. As such, it could pose a threat, but there is little research on its ability to pass through the skin or the harmful effects of that in the body. That being said, research has proven that silica does have a notable carbon footprint in the environment.

Can silica be a good addition to your skincare routine?

Generally, silica is safe and naturally derived (not to be confused with nanosilica), and should not be a red flag on ingredient lists. In fact, for certain people with oily skin types, silica can help hydrate your skin while controlling excess oil. However, if you are concerned with the environmental impacts of using products with silica frequently, than you may want to avoid it.