Citric acid, sodium cocoyl glycine, witch hazel. According to Amy's query. Com, the whitening facial cleanser of Sheikh Biotechnology consists of citric acid, sodium cocoyl glycine and witch hazel. The ingredients inside can inhibit the synthesis of melanin in the skin and clean up the junk toxins on the skin. Sheikh Pharmaceutical Co., Ltd. is provided with technical support and R&D by experts and professors from the Institute of Dermatology, China Academy of Medical Sciences, an internationally renowned skin research institution. Since the establishment of the joint venture factory, Sheikh Pharmaceutical Co., Ltd. has provided a marketable new product R&D formula.