It's full name is "Hair Polisher Solid Ice Pomade" I got mine at Sally's for around $4:
Ice Pomade.
Oddly enough the first ingredient in it
is water, but the product itself isn't watery or anything, and my hair was definitely smoother this morning than it was when I went to bed at night so I guess the specifics of the formula keep it from causing reversion. I imagine under normal conditions my hair would have held up, but I think it's too much to ask to expect any product to withstand actual rain, especially considering my hair was exposed to humid conditions all week beforehand.
For those sensitive to certain ingredients or trying to eliminate certain chemicals, you might want to go through the list first:
Ingredients: Deionized water, Mineral Oil, Oleth-5, Propylene Glycol, Peg-20 Hydrogenated Lanolin, Glycerine, Aloe Vera Gel, Hydrolyzed Wheat Protein, DMDM Hydantoin, Vitamin B-1, Niacin, Biotin, Vitamin B-6, Fragrance.