Lactobacillus Ferment Lysate is a probiotic ingredient that is produced when the cell membrane of the gram-positive bacterium Lactobacillus bulgaricus is broken or lysed. This releases the contents of the cell, which then can be used by resident skin flora (the good bacteria that live on the skin and keep it healthy) for growth. It is able to increase cellular respiration, collagen synthesis, has soothing properties, and can increase ATP (cellular energy) synthesis.