Dear Sir Cst4Ms4Tmps4, I am very sorry if my questions and the way I answered offended you. It never been my intention. And thank you also for pointing out my mistake. I am very new to cosmetic formulation field. Actually my field of study is Biology. I know that I am very stupid and having lack of knowledge in this field. I will try very hard to improve myself. I also want to say sorry to everyone else @Perry @Pharma@GeorgeBenson. I am sincerely sorry. Please forgive me.