Skin Tag, Mole and Wart Remover is Original and Authentic and because of it's thicker consistency is much more effective than 100 % TCA which has more of a water base to it and is highly damaging to the skin at that strength, if not used with extreme caution. Since so little of the solution is needed, you don't need a kit and only one bottle is all you would need for most cases. PLEASE DON'T WORRY THIS IS NOT MADE FROM APPLE CIDER VINEGAR.YOU WILL SEE RESULTS IN 1-2 WEEKS NOT LIKE THE NEW TAG AWAY WHO SHOWS RESULTS IN 3 TO 8 WEEKS???