Welcome and thanks for posting your query to Healthcare Magic.
As per your query you had mole on face and you applied some home remedy which caused burn on skin.
In your query you have not mentioned the time period since this thing been done.
Generally in any of these kind of incidences we get healing at the maximum in 2-3 weeks. If it has not healed in this time then you should be bit more careful and vigilant regarding the problem. As it is on face so it should not be taken lightly.
Fix an appointment with a dermatologist
to see that if the wound is not deep enough to cause scarring and is not a serious one to be handled immediately.
Hope these information will help.
"With good health wishes"
Dr Sanjay Kumar Kanodia
MD (Dermatology & STDs)