My gran used salt as an anti-septic as well, if you had a mouth ulcer she just poured it in. She also advocated a swim in the sea for grazes and bruises, the water must have been cleaner.
Spit and a dock leaf rubbed into nettle stings and spit to get blood out of the cloth you were sewing.
She always used green soap and had lovely skin.
Sore throats were wrapped in brown paper and I seem to remember it being put down my vest with Vick on it for a bad cough and was "Chesty',
The worst was if you hinted you were constipated she made you drink cod liver oil with dire consequences.
My other gran lived in the country and she had her own still room under the stairs, I can't remember ever taking any of her remedies except Goose fat on chilblains. But my father swore by them. Poltices were bread soaked in some distilled herbs.