Bladderwrack is also known by the names Black Tang, Rockweed, Bladder Fucus,Seawrack, Sea Oak, Black Tany, Cut Weed, and Rockwrack. Bladderwrack is a typeof seaweed found on the coasts of the North Sea, the western Baltic Sea, andthe Atlantic and Pacific Oceans. A common food in Japan, it is used as an additive and flavoringin various food products in Europe.Bladderwrack is commonly found as a component of Kelp tablets or powders usedas nutritional supplements. It is sometimes loosely called Kelp, but that termtechnically refers to a different seaweed. Primary chemical constituents ofthis plant include mucilage, algin, mannitol, beta-carotene, zeaxanthin,iodine, bromine, potassium, volatile oils, and many other minerals. The mainuse of Bladderwrack (and other types of seaweed) in herbal medicine is as asource of iodine, an essential nutrient for the thyroid gland. 
Fucus is a sticker attached to the rocks on the shore grow kelp, which gathered the rich marine life of France Brittany coast, tapping can be made at low tide. Its algae body is dark brown, into a pair of forked branches, flattened Horn. Moisturizing properties of glutamic acid can increase skin soft and smooth.

Fucoidan, a special intercellular polysaccharide, which exists in the cell wall matrix, is the unique biological activity matter in brown algae.It is extracted from the natural Laminaria Japonica Aresch, on kind of brown seaweed.Which is hydrosolube heteropolysaccharide, mainly consists of sulfuric ester-fucose, and also have little quantities of galactose, mannose, xylose, arabinose, saccharic-aldehyded acid, so it is called algin or fucoidan & Iaminaran.

The major effective ingredient is Alpha-L-fucose-4-sulfuric ester.Fucoidan's nutritional value stems largely from its native environment--the sea. Fucoidan is rich in calcium, iodine, zinc, iron, selenium and vitamin A. These nutrients are essential for proper functioning of the immune, circulatory and neurologic systems.

Health Benefits:

-Fucoidan used as medicine nature active ingredient for curing tumor, heart and blood vessel disease as well as kindly malfunction etc.
-Fucoidan used to produce antioxidizing, blood fat reducing and immunity enhancing health foods.
-Fucoidan used for high grade of cosmetic due to its good humectant and nutritional character.
-Fucoidan also used for agriculture industry.in regulating plant mechanism it has special function.

-Fucoidan is usefull for anti-oxidation.
-Fucoidan has anti-tumor and anti -HIV effects.
-Fucoidan has the function of anti -clotting, blood fat.
-Fucoidan has effect on the treatment of nephrotic syndrome and early-medium of chronic renal failure.
-Fucoidan esepecially has a good effect on the improvement of renal function and lowering serum creatinine obviously.
- Fucoidan can be used for weight loss, fucoidan can promote weight loss by reducing the accumulation of fat and other health foods.