润滑剂
The performance of dry lubricants is improved by the preparation of the surfaces. 干润滑剂的性能是靠表面的处理来改善的。
Water-based lubricants such as KY Jelly are preferred, and can be bought at most supermarkets, or pharmacists. 避免使用石油基润滑剂,如凡士林或婴儿油,因为这可以削弱避孕套,以及增加的机会,它的分裂。