Keep the area clean and dry. Wear cotton panties. To soothe the itch you can fill a basin with luke warm water and sit in it for a few minutes. Also you can add a 1-2 tsp of soda bi carb. Wear loose fitting pants to avoid the area getting sweaty.
You can always simply wash the area regularly, but if that doesn't work, try spreading some sugar free, plain yogurt on a pad and wearing it for an hour or too, the natural good bacteria should help fight off any infections and sooth the skin.
For a vaginal itch, there are many cures that one could use to cure it naturally, but among the best is to not use soaps that have fragrance, because the fragrance in the soap can cause an itch and also cornstarch is also an effective way to stop the itch..
Apple cider vinegar, watered down slightly,with a little crushed garlic mixed it,can be dabbed onto the vagina. Drink atleast two glasses of butter milk & eight glasses of cranberry juice per single day. Take olive leave extract. Grape fruit seed extract can be mixed with the olive leaf extract.