Almost anything applied to the ingrowing nail can seem soothing, but it doesn't stop the nail constantly ingrowing, and reacting after trimming or cutting (especially if the nail is cut lower than the top of the toe).
Pants has the best idea in that the whole plan should be to lift the offending nail away from the skin and stop it penetrating the flesh and causing pain and infection.
My Podiatrist almost had a fit when I asked her if I would need to have the nail removed. She said that this was completely unnecessary and not something she would ever recommend for her own family. The last visit to an earlier Podiatrist, who kept pulling the side away from my nail, dressing it and leaving me in pain meant that I would often wait for an infection which would stop me from sleeping, necessitate antibiotics and an inability to wear shoes until most of the redness had receded. I lived in fear of even touching the top of my toe with anything at all, bedding, a sock, shoes, washing my feet, because the pain was unbelievable.
My Podiatrist suggested that she used the Sogawa method to get rid of the ingrowing toenail for good. In one session she shaped the nail, applied a Titanium wire which was cut to fit the width of my toe and at one end had hooks which were put under the ingrowing nail, lifting it away from the awful hump and shape which the nail had become. The wire at the 'good' end was clipped, and fixed with some special resin on top of the nail. This meant that it kept pressure on the ingrowing part encouraging the nail to grow in a different and more normal way. I was told that I might need regular checks, otherwise I could ignore the wire until the nail grew to sufficient length that the wire fell away from the top, or she felt it was right for removal. I am about to lose the wire after 4 months. During that time I have been completely comfortable for the first time in years, the nail is no longer ingrowing or painful or unsightly. I have forgotten that it's there.
For nail fungus, I have successfully used Onytec 80mg/g (which is Ciclopirax) and after painting on the varnish for a number of weeks one summer it was wonderful to see the new clear nail growing up and the stained nail growing out.
If you want any further comment on the Sogawa method, PM me !