A prospective customer writes asking "Why are identical twin experiments important?"  Here is my response:  The reason why identical twin experiments are an excellent way to test a product like Hair Genesis™ can be understood as follows.   Imagine you are one person and you're losing your hair.  You want to know what will happen if you use Hair Genesis® vs. what will happen if you don't.  Since you can't slice yourself into two halves, it is pretty tough to know for sure, correct?  This is where identical twins become very useful in medicine and science.  Identical twins, by definition have the same genetic identity.