I got Survival 0 together with Survival 30 sunscreen as the concept of an antioxidant treatment intrigued me. It's really nice. In bottle and less so on skin it smells herbal/metallic (faintly reminiscent of tomatoes), but it's not strong or lingering. Texture wise it's lightweight gel-fluid, maybe a tad tacky finish, but it absorbs into skin almost within seconds. I use about 3 droppers full on face alone, it's that lightweight. The hydrating effect of Survival 0 is consistent with that of other amino acid loaded products (the slightly tacky, but silk smooth feel, but that is also partially due to glycerin). It's not like the way hyaluronic acid products hydrate skin and plump up fine lines visibly, but the effect is really nice (I generally use an additional hyaluronic product (Hada Labo) under Survival 0). The most noticeable instant effect is the warm tint, though. It's probably the carotenoids. The tint instantly makes skin look more glow-y (washes off, though). That together with the hydrating ingredients alone make Survival 0 a killer product to use on dehydrated and tired, dull skin. Other great effect is, when used overnight, visibly brighter and more even skin tone the next morning which impresses me, as there are so few products that do that to me (a good ascorbic acid or green tea product and a few Sisley products have similar effect). The effect doesn't stack up though, at least not so far, and seems to be temporary, but it's just a skin care product, so I take whatever benefit I can get. No breakouts, no irritations, in fact Survival 0 is actually somewhat calming. I'm seriously considering adding Survival 0 to my routine permanently (maybe both AM and PM), there's nothing horribly bad about this product so far (the dropper bottle doesn't bother me with this as it does with the Survival 30 sunscreen). Survival 0 does seems to transfer to light fabrics a bit, though, but I wear a metric ton of make-up anyhow, so it doesn't shock me to find pigments on clothes, but it's worth noting. EDIT: After going through the whole bottle I don't see it has made a lasting difference to my skin, not in a way a proven antioxidant like ascorbic acid would so it doesn't make the cut. It's a nice addition, but not a powerful workhorse.