<unk>  is a Keratolytic that is FDA approved for the treatment of external genital and perianal warts.   Common adverse reactions include local skin and application site reactions including erythema, pruritus, burning, pain/discomfort, erosion/ulceration, edema, induration, and vesicular rash.
Sinecatechins
Squalene
Oxolinic acid
Medigoxin
Allyl chloride
Ioglicic acid
Ethacrynic acid 
Piceatannol