Many times while vacationing in Florida I have been left with the feeling that my deodorant may not be working after a few hours in the heat and humidity. Ontop of that the white residue left under my arms and on my shirt are embarrassing. I purchased the Dove Ultimate Clear before my last trip and I was amazed. It left no white marks, no clumps under the arms and best of all it continued to smell great all day--even after trekking the parks for 5+ hours in 98 degree heat! I still has the worries but after a long 10 day trip it never let me down. What was even better was the after going to the pool you could still faintly smell the fragrance, even once you layed out to sunbathe. I will continue to purchase this product and will be sure to recommend it to friends and family.