I have heavy lids that have deflated after major weight loss, and now sit ON my lashline. Because of this any eyeliner will transfer right? If i sweat or cry I'll have a copy of the perfect line I made somewhere on the upper lid right? Well I was trying them all with NO luck no matter what they cost or claimed! Then I bought this one. Unfortunately this one came just as I was about to give it the ultimate test. My husband of almost 40 years passed away after fighting cancer for 4 years. He was my everything and I still love him with everything I have. He died at home with me 4 weeks ago and I have worn this to the funeral and everyday since. I've shed buckets of tears and because it's in the 90's and 100% humidity here in Ohio, I've sweat rivers too. Not one transfer, smudge or fade away! I hope you NEVER have to worry about your liner under circumstances anything like this but if you cry happy tears or sweat you can count on this one more than any other one I've tried!