I offer you this link as an example of a typical alcohol wipe study. As to alcohol hand wipes, they often use other agents in combination with alchol and the alcohols they employ may not evaporate as quickly as isopropyl alcohol. To sterilize instruments in alcohol (which works) you have to submerge them a minimum of 10 minutes. Contrast that with the few seconds between the time the phlebotomist swabs your arm, waves over it to air dry it and draws your blood. It is merely a ritual. My point though really was- don't inflict pain on yourself by pouring alcohol into a cut thinking you are doing some good.
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=2503183
