Snail mucin (snail secretion filtrate) is widely used in cosmetic and dermatological products, particularly in East Asian skincare, for its purported skin-healing and regenerative properties. The scientific evidence supporting its use for scars and scar tissue is limited but not entirely absent. Several in vitro and small-scale in vivo studies have suggested that snail mucin contains a mix of compounds—such as glycoproteins, hyaluronic acid, glycolic acid, and antioxidants—that may promote wound healing, stimulate collagen production, and improve skin hydration and texture. These properties theoretically could support scar healing and the improvement of scar appearance.

However, most of the available research has focused on general wound healing rather than specifically on established scar tissue. For example, a few studies have demonstrated enhanced fibroblast proliferation and migration, which are important for the wound healing process. Clinical evidence directly linking snail mucin to significant improvement in scar tissue is scarce, with most supporting data coming from small, non-randomized, or observational studies, as well as anecdotal reports.

In summary, while there is some preliminary scientific rationale and limited supportive evidence for the use of snail mucin in scar management, robust clinical trials specifically addressing its effects on scars and scar tissue are lacking. Thus, its use is somewhat justified scientifically, but the strength of the evidence is modest.