定义
Nonapeptide-4 is the synthetic peptide consisting of aspartic acid, cysteine, glycine, histidine, leucine, proline, serine, and tyrosine
化妆品中的作用
保持肌肤良好状态（CosIng 泛分类）SKIN CONDITIONING
安全与法规参考
Other restriction: ban substances that deplete the ozone layer
来源: 欧盟 CosIng 成分清单