Lexgard Natural is an all-natural multi-functional ingredient system for preservative-free and self-preserving cosmetics. Lexgard Natural is composed of high purity monoesters of caprylic acid (C8 acid) and undecylenic acid (C11 acid). The former is well established for its biostatic activity against bacteria and yeast. The latter is known for its activity against fungus. This combination provides remarkable broad-spectrum effects. Formulations with Lexgard Natural efficiently pass challenge tests required in the cosmetics industry.