It is super packed with antioxidants, but most of their ingredients are chirally correct. Chiral  (prounced ki-rul) is a type of molecule that’s much easier for your body to absorb. One of the real superheros in Replenish could well be chlorella vulgaris extract. A bright green algae (pictured), it is loaded with amino acids such as lysine, proline, glycine, and alanine, all of which are the essential building blocks of proteins and constitute each individual collagen unit. Plus there is phosphatidycholine, the predominant phospholipid (something that is in all life forms) of all cell membranes and of the circulating blood lipoproteins.

Osmosis Replenish caused a bit of controversy with readers questioning the use of niacinamide alongside resveratrol and the inclusion of ethyl alcohol. I investigated the niacinamide issue and concluded in a post that it is a worthy ingredient in every sense. Topical application of niacinamide has been shown to increase ceramide and free fatty acid levels in skin, prevent skin from losing water content, decrease hyperpigmentation and stimulate microcirculation in the dermis, according to many peer published studies. Regarding the alcohol, I do notice a fleeting (and I mean a second or two) tingle when I first apply Replenish, but otherwise have noticed no irritation (and I have very sensitive skin). (See my review for more)

What the TIA community said:

Kim (our reader reviewer) said:  "The first few days I used Replenish my skin was a little red right after use. Not red in an irritated inflamed sort of way. More like red, in a flush, blood-is-rushing-to-my-cheeks pretty sort of way. It tingled for a few moments, but did not irritate me at all (and I’ve got sensitive skin!). Within a few days to a week my skin started to look smoother, dewy, and all-around much healthier. And I know it wasn’t in my head, because my boyfriend even commented on it!"

L said: "It is a wonderful product!"

Rileygirl said: "I love the Osmosis Boost, so I am very interested how the Replenish works!"

RV said: "I have been using the Replenish daily for about 3 months. It makes my skin look and feel wonderful. One of the best antioxidant products I have found. I am also a huge fan of the Osmosis Shelter SPF 29+."

Ingredients

Purified water, phosphatidycholine, ethyl, niacinamide, glycerin, catalase, superoxide dismutase, L-glutathione, ferulic acid, CoQ10, tetrahydrocurcuminoids, spin trap, R-lipoic acid, astaxanthin, chlorella, trans resveratrol, GHK copper peptide, grape seed extract, curcumin, green tea extract, ginkgo biloba, essential oil blend