Read the back of most foot creams and you'll find "botanical complex" and "proprietary blend" doing a lot of work. Straight tea tree oil from the bottle stings and reddens broken skin. And if a company won't tell you what's in the jar, or how much, there's usually a reason.
FungiClear has five ingredients and every one is printed on the jar: wild oregano oil, tea tree oil, copper peptides, vitamin E and allantoin. No proprietary blends, no fillers, no fragrance. And every claim is sized to the evidence: tea tree oil has been studied in a randomized trial in people with athlete's foot, where a 10% cream eased itching, scaling and burning — it did not clear the fungus better than placebo, which is exactly why we call this a comfort cream, not a cure.