Girl in dress stands rain - clothes have been dipped in chemicals to make them waterproof.
Waterproofed clothes. Various shots of rain beating down onto house. C/U of girl in summer frock and headscarf peering through some French windows. She steps boldly into the rain - the narrator explains her clothes have been dipped in a special solution that make the fibres water-repellent. Various extreme C/Us of water running off the treated garments.