Alcohol is water soluble and leaves little or no residue. A mild detergent, such as Johnson and Johnson Baby Bath, can be used in small amounts with water with no rinsing necessary. Photo Flo is a wetting agent used in photography to help reduce water spots and marks during the rinsing of negatives. A couple of drops in the above solutions also help in reducing residual deposits.
The solution should be applied with a soft, clean washcloth, (use a terry cloth or cheese cloth) wiping in a circular motion with the grooves. Rinse the cloth often in the solution and replace with a fresh mixture when needed. I recommend thoroughly drying the record with a soft, clean terry towel or chease cloth... this further reduces residue left behind. Try not to get the labels wet.