Daniel_

The condoms that I am responsible for putting on the market in Europe do say "do not use butter, margerine, baby oil, or petroleum jelly" on the warnings.

Natural latex rubber is a polymer - it's just not a synthetic one. For that matter, cellulose and starch are both polymers too - not all polymers are man-made plastic.

Butter contains fats - fats disrupt the strength of the latex.

To expand what I said above - ALL oils, greases, fats, and solvents will weaken latex.

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Overhead, the Albatross hangs motionless upon the air,
And deep beneath the rolling waves,
In labyrinths of Coral Caves,
The Echo of a distant time
Comes willowing across the sand;
And everthing is Green and Submarine
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