Exfoliants

Silicon

INCI: SILICON

Reviewed by Daisy · Last updated 14 Aug 2026

A trace element that may support skin structure and collagen formation

Best For Skin Types

All

Addresses

Fine lines, Elasticity, Skin firmness

Usage Frequency

Daily

What Is Silicon?

Silicon is the second most abundant element on Earth and the third most abundant trace element in the human body. It occurs naturally in water, plants and animal sources, and is used in skincare products primarily in organic forms such as monomethylsilanetriol.

In cosmetic formulations, silicon functions as an abrasive and is thought to work by supporting the skin's structural integrity. Research suggests it may play a role in optimal collagen synthesis and the activation of enzymes involved in skin strength and elasticity.

Benefits for Your Skin

How It Works

Silicon is believed to be important for the activation of hydroxylating enzymes, which are involved in collagen cross-linking and stabilisation. This enzymatic activity may contribute to improved skin firmness and elasticity at a structural level.

When applied topically in organic forms, research indicates that silicon can penetrate the viable layers of skin (epidermis and dermis), rather than remaining on the surface. Some evidence also suggests potential antioxidant activity, though this requires further investigation.

Clinical Evidence & References

Most established evidence for silicon's benefits comes from oral supplementation studies, which suggest it supports collagen synthesis and skin appearance. Topical delivery has been explored in research, with studies confirming that organic silicon compounds can penetrate into the epidermis and dermis when formulated appropriately.

However, the evidence base for topical silicon in skincare is limited compared to other established ingredients. Whilst research is promising, larger and longer-term clinical trials are needed to establish efficacy thresholds and optimal formulation approaches for skincare products.

How to Use

Silicon appears in roughly 0.1% of skincare products, typically in creams or serums designed to support skin firmness. It is generally well-tolerated and can be used as part of a regular skincare routine, though results are likely subtle and gradual rather than immediately visible.

Safety & Precautions

Silicon is generally well-tolerated in topical formulations. No significant adverse effects have been reported in available research.

Frequently Asked Questions

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