I always used the black bottle of Shiseido Zen perfume. They now sell Zen in a square gold bottle. Before buying it, since I have a high sensitivity to smells, I called Shiseido to be sure the formula was the same. I was promised there had been no changes. My husband bought me a bottle for Christmas. Due to Covid, I've been out very little. When I finally put on the perfume, I quickly started getting a terrible headache. I got online and saw that the new perfume has a different formula than the old one I used. Now it has been over 30 days and I can't return the perfume. I called Shiseido to see if they would be wiling to assist me since they informed me incorrectly and I would never have bought the perfume knowing the formula was different. They took no responsibility and would not do anything to help!