Hello, Welcome to healthcare magic Wart remover liquid which you applied might have been strong which people usually use for warts over hands and feet. It is not advisable to apply that on the face which is very sensitive. Now you have irritant contact dermatitis, more like a chemical burn and yes there is a chance of it leaving behind a pigmented mark. You should apply cold compresses many times in a day. An ointment containing antibiotic and steroid twice a day for three to five days will help bring down inflammation faster. (for eg fluticasone and mupirocin). Get it prescribed by your primary care physician. Sunlight will make the mark darker. So avoid excessive sunlight exposure and apply sunscreen over the mark during day time. I would recommend you to see a dermatologist for removal of wart through electrosurgery. Hope this helped Take care