If you've been hearing a lot about skin care brand Restorsea recently, you can thank Gwyneth Paltrow. In March, the actress became the spokesperson for the ocean-centric line.

While all the products contain brown algae for its anti-inflammatory and moisturizing properties, the star ingredient is the gently exfoliating enzyme Aquabeautine XL. It's derived from the enzyme that's released by baby salmon to dissolve their eggs -- and it works similarly on the skin, breaking down dead cells. Sounds like something GP would love, don't you think?

Star product: Restorsea Rejuvenating Day Cream, $150. It's silky and unbelievably moisturizing, and it makes skin glow after just one use.

San Francisco scientists came across alguronic acid while researching microalgae, and soon after, Algenist was born. That was just a few years ago, and the line continues to pick up steam -- selling out in Sephora and on QVC. Instead of algae, Algenist products contain patented alguronic acid, the molecule that protects the algae cell. In a similar way, it protects skin cells from UV damage and stimulates the production of elastin, which helps with firmness.

Star product: Algenist Catalyst Alguronic Acid Power Treatment, $195. This new trio of serums contains the highest concentration of alguronic acid, and it works fast. In studies, skin looked brighter and tighter in 10 days.

Aerospace physicist Max Huber created La Mer to treat chemical burns he suffered in an accident -- and it worked. By combining fermented sea kelp, vitamins and minerals, he developed the line's signature "miracle broth" -- and the recipe remains the same 40 years later. Now that's the sign of a true cult favorite.

Star product: La Mer Creme de La Mer, $155, is the signature product. It has a rich texture and soothing effect.

Instead of researching any old marine ecosytem, Ahava focused on the most mysterious of all: the Dead Sea. The resulting products contain a patented combination of Dead Sea minerals called Osmoter, as well as other botanical ingredients and brown algae.

Star product: Ahava Age Perfecting Hand Cream SPF 15, $32. This new hand treatment protects with SPF 15 while brightening existing sun damage. It's not the slightest bit greasy, and it smells amazing.

For three generations, Phytomer products have been developed and packaged on the shores of Brittany, France. The formulations blend marine ingredients with other plant extracts, and the products feel amazing and really work.

Star product: Phytomer Celluli Attack, $105. The French are famous for cellulite treatments, and the results from this one are pretty major. After just 28 days, dimpling was half as visible -- largely thanks to sea grape and sea absinthium extracts.