INTRODUCTION

For our experiment we are going to make a solution creating at least four different soaps attending the variables of smell, texture, level of bubble, strength and effectivity (related to the supposed anti bacteria effect of the soap) with regard to the lethality of bacteria. To prove the experiment we are going to create different cultures of bacteria and then we are going to see the different effects of the four soaps on their growth. We want also to see the quantity of anti bacteria that each soap has, depending of the lethality of the bacteria exposed.

Currently, we all know that the soaps have different chemical compositions and depending on their composition they will react and make different effects on our skin, on different types of lives, and also in another types of surfaces.This is due to the different types of soaps that exists: bath gel, hand gel, face gel, acné gel...

In conclusion, we pretend to do an investigation about the soaps and their effects on the bacteria's lives to confirm the main variables described before.