Garlic is a member of the onion family and has been used for medicinal purposes since the times of the pharaohs of Egypt. There are a few studies linking garlic to skin care.
In one study, ajoene, a component of garlic, produced a clinical response in patients with basal cell carcinoma skin cancer. It was shown to induce apoptosis (death) of cancer cells in 17 of 21 patients with basal cell skin cancers. This is interesting research, but unfortunately does not make garlic a viable treatment for skin cancer yet; in these patients the skin cancers became smaller, but were not cured.
Basal cell carcinoma should be treated with destructive surgery such as electrodessication and curettage (ED&C), simple surgical excision, or a Mohs procedure. In some instances it can be treated with prescription anti-cancer creams. Diagnosis and treatment of any skin cancer should be discussed with your physician.
Garlic has also been used as a short term treatment for athletes foot (tinea pedis). In one study, application of ajoene cream resulted in cure in 27 of 34 patients after 7 days of treatment with no recurrences after 3 months.
Although, if fungus ridden feet are keeping you from dating, I am not sure that a garlic cream is your best option.