False Tomato Frog: "blisters"? on upper eyelids & around nostrils

[Lija]

So sorry nobody replied yet.
I dont have experience with tomato frogs, so i cant comment on husbandry other then general knowledge. Bark and moss are impaction hazard, you better off with just exo earth or similar.

I will cover vet part.

Yes melafix is what you should be using. You need to place him in quarantine enclosure on wet papertowels changed daily. 3-4 sides of the enclosure covered, put in a plant, water bowl. The idea is whatever you put in has to be easy to disinfect and it also has to create as stress free environment as possible. Do a bath with melafix, you can use it to spray enclosure and to wet papertowels. Water level in a bath no higher then frogs chin.
That doesnt look bad, but you need to get it treated. Keep him in a bit less humidity, at about 70 it will help healing. Get flamazine ( silver sulfadiazine) cream, use it on wounds 2x day., careful not to put it on a eye, use q tip. Watch it if no better within a week you need systemic antibiotics.
So it would make sense for you to research vets in your area who treat frogs. You will need to get his poop tested as a normal quarantine procedure anyway.