This is a naturally derived preservative from grapefruit seeds and pulp that has been in use since the 1970’s. Citricidal works as a benign, hypoallergenic and wide-spectrum preservative in many formulations. The recommended use level is from 0.2% to 1.0% in the water portion of creams, lotions, etc. This is an unadulterated grapefruit seed extract, it does not contain added synthetic parabens or triclosan, that have been found in some grapefruit and citrus seed extracts