Hi Lindaw;
I am on a combination of herceptin,xeloda, and taxotere and have the same rash problems...particularly on the back of my hands and knuckles and under my nose. The best thing I have found is to use a lanolin based cream ( I use a brand called UDDERBALM which also contains Aloe,by Bio-Sentry Labs) . At night I smoother my hands in it and then put on a pair of soft cotton gloves (you can buy them for $3 in the manicure section of most pharmacy stores). Wearing soft gloves occasionally during the day also helps to prevent irritating the rash as you put you hands in and out of your pockets,purse ect. I also found that running cold water on my hands helps if they get really itchy.
As for the lips I use lots of coccobutter based chapstick and fruit popsicles when it get too annoying
.
kk