<P> One survey of bar soaps in dentist clinics found they all had their own flora and on average from two to five different genera of microorganisms with those used most more likely to have more species varieties . Another survey of bar soaps in public toilets found even more flora . Another study found that very dry soaps are not infected while all are that rest in pools of water . However, research upon soap that was specially infected found that soap flora do not transmit to the hands . </P> <P> Washing skin repeatedly can damage the protective external layer and cause transepidermal loss of water . This can be seen in roughness characterized by scaling and dryness, itchiness, dermatitis provoked by microorganisms and allergens penetrating the corneal layer and redness . Wearing gloves can cause further problems since it produces a humid environment favoring the growth of microbes and also contains irritants such as latex and talcum powder . </P> <P> Hand washing can damage skin because the stratum corneum top layer of skin consists of 15 to 20 layers of keratin disks, corneocytes, each of which is each surrounded by a thin film of skin lipids which can be removed by alcohols and detergents . </P> <P> Damaged skin defined by extensive cracking of skin surface, widespread reddening or occasional bleeding has also been found to be more frequently colonized by Staphylococcus hominis and these were more likely to be methicillin resistant . Though not related to greater antibiotic resistance, damaged skin was also more like to be colonized by Staphylococcus aureus, gram - negative bacteria, Enterococci and Candida . </P>

Name three types of microbes most commonly associated with skin