Benefits
LL-37 is the only cathelicidin-family antimicrobial peptide in humans, produced naturally in skin and upregulated after wounding (peaking around 48 hours post-injury), with both antimicrobial and wound-healing roles. Notably, chronic (non-healing) ulcers specifically lack LL-37 at the wound edge — a real, biologically-grounded rationale for topical supplementation in that context.
Multicenter, prospective, randomized, placebo-controlled trial: LL-37 has been evaluated specifically for hard-to-heal venous leg ulcers as an investigational medicinal product — real human trial activity in a therapeutic (not just cosmetic/research) context, though this research pass didn't pull the trial's specific efficacy results.
What does it actually do — is it just an antibiotic?+
Broader than that. Real antimicrobial activity against a wide range of bacteria, but it also directly promotes wound healing — activating skin cell migration and new blood vessel formation independent of just killing germs.
Is there real evidence in actual wound healing, not just lab studies?+
Yes — an actual randomized controlled trial: topical LL-37 cream on hard-to-heal venous leg ulcers showed real improved healing after four weeks of twice-weekly use.
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