Tea Tree Oil Soap With Activated Charcoal is an anti-fungal soap that tones and detoxifies skin. Sometimes your skin needs a little extra attention. Yin Yang is an essential oil soap made from a vegetable glycerin soap base. Activated charcoal. tea tree & lemon essential oils help purify your hardworking skin. This soap is a staple for athletes as it helps to guard the skin against yucky bacteria, and is designed to cleanse, tone & purify skin naturally.