What creams can i use to split skin underneath the small toe?

Antifungal: Try antifungal, if it doesn't resolve see your doctor for possible debridement and an accurate diagnosis.

Antifungal: I believe you are referring to the little splits people get underneath the toes and sometimes inbetween the toes. These are usually caused by a fungus, commonly referred to as athlete's foot. Try to find a over-the-counter antifungal spray or gel. Ointments and creams sometimes keep the skin too moist.