Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Silicon, most commonly in the form of topical silicone gels or sheets, is used to support the management of stretch marks (striae distensae), although its primary and strongest evidence is in scar management. The rationale for using silicone is based on its well-established efficacy in improving the appearance, texture, and color of hypertrophic and keloid scars. Several clinical studies and systematic reviews have shown that silicone gel and sheets can help hydrate the stratum corneum, modulate fibroblast production, and reduce collagen deposition, which contributes to improved scar appearance. When it comes to stretch marks, the evidence is less robust. Some small studies and anecdotal reports suggest that silicone-based products may help reduce the redness and improve the texture of early (red or purple) stretch marks by similar mechanisms used in scar treatment, particularly through hydration and occlusion, which may facilitate skin healing and remodeling. However, there are few high-quality, randomized controlled trials supporting silicone’s efficacy specifically for stretch marks. Most dermatological guidelines recommend silicone primarily for scars, not stretch marks, and consider its use for stretch marks as off-label with limited clinical evidence. In summary, while there is scientific validation for silicone’s benefit in scar management, its use for stretch marks is supported by extrapolation rather than direct evidence, making the overall evidence moderate to weak.

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