I suffer from scent-triggered migraines and I have always used Mitchum deodorants because they had scents that were mild enough they did not cause migraines for me and they also work very well. I used to use Unscented, but recently the scent changed to be very strong and caused migraines, making it unusable for me. Very strange for a product named Unscented, but I assumed it was a one-off mistake. I switched to Pure Fresh for the last 6 months or so, but now the most recent bottle of roll-on I bought has once again had a very big change in scent and given me a huge migraine today. I happened to have enough of my old one to be able to directly compare and the difference in scent is huge. In both cases mentioned above, there was no mention of a change in formula or scent on the bottle, otherwise I would not have purchased them. Now I have had to throw out another entire bottle of deodorant because I simply cannot use or return it, and I won't be purchasing Mitchum again.