Derived from Lactobacillus, this ferment filtrate has been developed to increase the synthesis of eumelanin biologically over time, while simultaneously preventing pheomelanin synthesis to induce a deep, dark and even tan. FSS DermaPeptide Tanning PF is capable of stimulating higher concentrations of visible melanin by a mechanism which is not light dependent. FSS DermaPeptide Tanning PF is recommended for use in long-term tanning formulas and may also be used in conjunction with DHA products until the natural tanning simulation begins.