Polylysine 25% solution is a natural polymer of L-Lysine, an essential amino acid produced by fermentation of bacteria. It can be used alone or in combination with other preservatives. It is not compatible with anionic surfactants. Effective pH 5-8.

DS-CERAMIDE Y3S is one of the most purist ceramides containing stereochemical structure identical to those found in human skin. Ceramide 3 has been used as a highly functional cosmetic ingredient for maintaining skin moisture balance by repairing damaged skin lipid barrier.

DS-PHYTOSPHINGOSINE is a white to off-white powder with a characteristic odor. Phytosphingosine is used not only for skin and optimization of skin flora but also for restoration of damaged skin barrier. We found that, especially, it was effective on control of acne bacterium and S. aureus. In addition, it has been known to stimulates de novo synthesis of glucosylceramide, which helps restoring the damaged or aged skin structure. It also strengthens the skin structure.

DS-SPHINGOMYELIN-M is a white to off white powder from milk with a characteristic odor. Sphingomyelin is one of the major components of the cell membrane. Under the stimulus of outside environment, sphingomyelin is degraded to ceramide. DS-Sphingomyelin-M protects skin from dryness and helps to maintain skin barrier homeostasis. Also, DS-Sphingomyelin-M is useful as a liposome stabilizer by increasing rigidity of liposome.