It is neccessary to know the difference between skin types. The importance of knowing your skin type cannot be stressed enough when it comes to making a choice for a particular beauty treatment.Normal skin appears smooth with no shine and no overly dry areas (an even complexion). Pores are not enlarged and there is a balanced level of moisture and elasticity.Sensitive skin may be any type of skin, but it tends to develop from mild to severe reactions to cosmetic products, which are not hypoallergenic.http://fileshome.com/Skin_Types_the_difference_between_skin_types_25224.html