Just wondering if anyone else has had an allergic reaction to vitamin c serum and if so did you find one which was fine for your skin? I took a reaction to the boots no. 7 one. Took me a while to work out what was causing the reaction (red swollen eyelids and puffy face) as it wasn't immediate and I had gone through a previous bottle with no problems but there must have been a formula change. Anyway, just tried a new vitamin c serum yesterday and woke up this morning with the same problem. The latest one was the superdrug optimum range. Has this happened to anyone else and is there anything you could recommend? Thanks!