Reviewed and rejected: Sisley Sisleya Daily Line Reducer
Sisley Sisleya Daily Line Reducer costs in the region of $470 (I have seen it for less and for as much as $570). Granted a little goes a long way and this gel/serum is supposed to last one year. For that much money, I'd want to be fairly confident that I had my hands on a proven anti-ager or, at the very least, something that is new and cutting edge. Not so with Sisleya Daily Line Reducer.
It has three magical ingredients that are supposed to penetrate to the cell level and trigger collagen and elastin production. It turns out that these are three botanicals: soy protein, padina pavonica, and physalis. Looking more closely at these three ingredients, I would conclude that if you fork out nearly $500 for this potion you'd be putting a lot of faith in soy protein. In vitro studies of soy have shown that it can stimulate basic fibroblast growth factor.
Padina pavonica is an alga also known as peacock's tail. You'd be hard pushed to find out much about it other than it crops up in other Sisley products. The third ingredient, physalis is a member of the same family as wolfberries and so I assume it could have anti-oxidant properties. After much rummaging, I did find a study on mice suggesting it is a cell killer.
Killing cells (unless they are cancerous ones) isn't necessarily a good thing. Sisleya Daily Line Reducer also contains another reputed cell killer, lavender. There are also a couple of plant extracts that could be irritants.