Back in the U.S. I was always able to buy it anywhere. I used it for cuts and scratches and zits. In the UK it seemed difficult to get hold of.
I'd like to buy it as I see it recommended for getting rid of plant pests.
I don't know, we used to buy it from the supermarkets in France and use it to keep ears clean - a drop a day dissolved excess wax, which OH was prone to. It was very cheap. Now I can only get in a proprietary brand with oil - & that costs 3 times as much.