I purchased the Formula X Delete All 5 Finger Nail Polish Remover 2 months ago. I use it every 1 to 1 and half weeks and it's still going strong. It removes all my polish within a few seconds. I find it drying for my nails but using a good hand cream takes care of that. It leaves a white residue on my nails and fingers but it easily washes off. It is a little pricey but if it lasts for a long time, then it's worth it to me. Overall the convenience out ways the negatives. I wish they made one for my toes! I will repurchase.