Survival past 48 hours is usually a good sign that recovery will occur. If any damage to the kidneys or throat has occurred, it may take several months to heal.
Skin irritation is short lived.
They will instruct you if it is necessary to take the patient to the hospital. See Poison Control centers for telephone numbers and addresses. Take the container with you to the emergency room. This is best left to the medical personnel at an emergency room. Give other fluids, with the amount being determined by kidney function.