Abstract: Personal care product preservation systems and methods comprise the use of wasabi and a co-preservative, such as pentylene glycol or a mixture of undecylenoyl glycine and capryloyl glycine to preserve a personal care product. The wasabi provides a natural preservative effect that inhibits the growth of microbes that can otherwise flourish in personal care products. The personal care products can be in the form of emulsions, gels, serums, solutions, and other vehicles suitable for use with personal care products, such as toners, lotions, creams, and the like. Personal care product preservation systems and methods may also comprise the mixture of undecylenoyl glycine and capryloyl glycine to preserve a personal care product.

Abstract: A method for reducing signs of aging in human skin. The method includes the steps of (a) topically applying to the skin a hydroxy acid product having at most a hydroxy acid concentration of approximately 7.0% and having a pH range of between 3 and 4 which causes an increase in exfoliation of the skin; (b) topically applying to the skin a non-hydroxy acid product; (c) repeating steps (a) and (b) at least twice daily for approximately four weeks; and (d) repeating only step (b) at least twice daily for approximately another 4 weeks.