Colloidal silicic acid for oral and topical treatment of aged skin, fragile hair and brittle nails in females

If you want to have a more in-depth understanding of why we developed our silicon products for you, we invite you to read more about a key study on how silicic acid can improve your skin, hair, and nails.

In 1993, A. Lassus published an open study regarding a silicon treatment for women with biologically aged skin, fragile or thin hair, or brittle nails. The study aimed to understand how colloidal silicic acid could help improve their skin, hair, or nails.

How does silicon occur in our body?

Until recently, silicon was not deemed important for our physiology. In human tissue, the epidermis (the upper layer of the skin) and hair contain relatively high silicon concentrations. It accounts for 0.4–1.7% of the total tissue weight on the skin surface and hair epicuticle. In human blood, the silicon concentration is no more than five ppm (parts per million). This means that silicon is of varying importance in different parts of our bodies.

Who were the study subjects, and how were they treated?

The study included fifty women with aged skin, fragile hair, or brittle nails, of whom 47 completed the 90-day experiment and three withdrew after 30 days. Their mean age was 48 years (38–64 years), and their skin had been changing for a mean duration of 9 years (3–20 years). They were treated with 10 ml of colloidal silicic acid (Silicol®) taken orally once a day. The women also applied colloidal silicic acid to the face twice daily for 10 minutes. They were examined after 30, 60, and 90 days.

What do the researchers conclude about the effects of silicon treatment on the skin, hair, and nails?

Based on the 47 women who completed the 90-day treatment, the skin thickness and turgor, wrinkles, and condition of the hair in nails showed statistically significant improvements. The number of mottles generally appeared to decline, but this change was not statistically significant. The epidermis and the skin's elasticity also did not significantly change. However, the thickness of the dermis, the layer between the epidermis and the hypodermis, increased significantly.

Lassus, A. (1993). Colloidal silicic acid for oral and topical treatment of aged skin, fragile hair and brittle nails in females. Journal of International Medical Research 21, 209-215. doi: 10.1177/030006059302100406

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