Hair analysis can be referred to the forensic technique of assessing a various number of different types of characteristics of hairs in order to determine that whether the hairs have any characters in a common source for taking the example into consideration, the comparison of hairs found at the scene of the crime and it is being compared with the hair samples taken from a particular suspect. And it is also found that the hair analysis technique is also used for the deduction of various therapeutic drugs and recreational drugs. So the hair testing or hair analysis technique is nothing but to promote the research in hair testing technologies in the forensic departments and also it encourages developments in clinical and occupational sciences departments. It is also tends in developing the international proficiency tests and to organize meetings and various workshops and also in encouraging the various scientific co-operation and various types of ideas which can be exchanged among the members in the association. Then the board of the society of hair testing association agreed upon the latest version of a consensus in sevilla and they came into a conclusion from hair analysis techniques.