Bladderwrack Extract is filled with minerals that help nourish and cleanse the skin of toxins that cause dryness, wrinkles and excess fluid retention, states From Nature With Love. The powder, which may be purchased from most natural food or health stores, may be added to bath water, soaps, wraps and to facial scrubs and salts for detoxification of the skin. Bladderwrack Extract may also be used to help reduce inflammation and pain in joints caused by rheumatoid arthritis, in both internal and external forms of application and ingestion. Bladderwrack capsules or tablets may be purchased at most natural vitamin or health stores. The herb may also be purchased in raw form to create an infusion by brewing or steeping the herb in a quart of hot water, states Nutri-Herb. Components of Bladderwrack Extract such as carotene, fucoidan, mannitol and bromine offer vital nutrients to bone and joint health. Bladderwrack Extract contains a fiber known as alginic acid, which aids digestion. Individuals may take bladderwrack to help relieve constipation or diarrhea. Some even take the herbal supplement for treatment of heartburn, states Nutri-Herb.