Skip to main content
Natural Lifestyle Retailer of the Year - 2025
Enjoy free delivery on all orders over £50
craft\elements\db\ElementQuery craft\elements\db\ElementQuery

Sea Moss

Chondrus crispus

What is sea moss?

Sea moss, or Irish moss, is a species of red algae that grows along rocky Atlantic coasts. Long used in traditional herbal medicine, it has recently gained traction as a versatile superfood and is known for its rich nutrient content.


What is sea moss found in?

Sea moss appears in a wide variety of products, such as:

  • Raw dried moss: Soaked, blended and made into gels
  • Pre-made sea moss gels: Used in smoothies, teas or alone
  • Capsules and tablets: For daily, measured intake
  • Powders: Stirred into juices, soups or porridge
  • Topicals: Added to skincare for calming, replenishing effects

It has a neutral flavour that blends well and a soft jelly texture when rehydrated.


What are the specific benefits of sea moss?

Thyroid support

Sea moss is naturally rich in iodine, a nutrient essential for producing thyroid hormones. These hormones regulate everything from metabolic rate to energy levels and hormonal stability.

Skin health

Traditionally used as a base for skin creams and poultices, sea moss may help soothe dry, itchy or inflamed skin. Its sulfur content supports sebum balance. Meanwhile, its gel-like texture makes it a calming, cooling option for topical use.

Digestive support

Sea moss contains mucilage (a type of soluble fibre) which helps soothe the digestive tract and support a healthy gut lining. It may aid bowel regularity and encourage beneficial gut bacteria.

Immune function

The wide range of nutrients found in sea moss, including antioxidants and minerals like zinc and selenium, are thought to help the body mount a stronger defence against infections and inflammation.

Weight management

Some people use sea moss to support appetite regulation. Its fibre content may contribute to feelings of fullness and satiety.

Muscle support and recovery

Sea moss contains amino acids including taurine, which may help support muscle repair and reduce exercise-related fatigue.

Energy and vitality

Sea moss provides an array of micronutrients that may help the body feel more energised and reduce feelings of fatigue, particularly if nutrient levels were previously low.

Cognitive function

Iodine is not just for the thyroid, it also plays a role in brain development and function. Regular iodine intake may support memory, mental clarity and general cognitive health.


What else is sea moss known for?

Anti-inflammatory properties: May help settle irritation in the body and calm skin flare-ups

Antioxidant-rich: Supports the body’s natural defence system against cellular damage

Antibacterial: Early studies suggest sea moss may help limit bacterial overgrowth

Brain function: Fuels the brain with minerals that keep your thinking clear and focused


Safety

Sea moss is generally safe in moderation, but there are a few things to keep in mind:

  • Iodine levels: While essential, too much iodine can put strain on the thyroid. Stick to recommended serving sizes and avoid overuse.
  • Heavy metal exposure: As a marine plant, sea moss may absorb contaminants from the water it grows in. Always choose sea moss from a reputable source.
  • Medication interactions: If you're taking thyroid medication or blood thinners, check in with a healthcare professional before starting a supplement containing sea moss.

How to use sea moss

There are plenty of ways to bring sea moss into your routine. For a few starting options:

  • Add a spoonful of gel to smoothies, herbal teas or porridge
  • Stir the powder into soups or baking mixes for a hidden health boost
  • Take capsules if you prefer
  • Try topical skincare formulas for localised soothing effects

Recommended for

Explore products containing Sea Moss

Kiki Health

Irish Sea Moss - Organic (90 Caps)

Pure organic sea moss capsules

£19.95

Academic References

Darias-Rosales J, Rubio C, Gutiérrez ÁJ, Paz S, Hardisson A. Risk assessment of iodine intake from the consumption of red seaweeds (Palmaria palmata and Chondrus crispus). Environ Sci Pollut Res Int. 2020 Dec;27(36):45737-45741. doi: 10.1007/s11356-020-10478-9. Epub 2020 Aug 15. PMID: 32803579.https://pubmed.ncbi.nlm.nih.gov/32803579/#:~:text=Irish%20moss%20(3.86%20%C2%B1%201.49,not%20pose%20a%20health%20risk.

The National Eczema Association Get the Facts: Eczema and Sea Moss https://nationaleczema.org/blog/sea-moss-for-eczema/

Lomartire S, Marques JC, Gonçalves AMM. An Overview to the Health Benefits of Seaweeds Consumption. Mar Drugs. 2021 Jun 15;19(6):341. doi: 10.3390/md19060341. PMID: 34203804; PMCID: PMC8232781.https://pmc.ncbi.nlm.nih.gov/articles/PMC8232781/

Lomartire S, Marques JC, Gonçalves AMM. An Overview to the Health Benefits of Seaweeds Consumption. Mar Drugs. 2021 Jun 15;19(6):341. doi: 10.3390/md19060341. PMID: 34203804; PMCID: PMC8232781.https://pmc.ncbi.nlm.nih.gov/articles/PMC8232781/

Čmiková N, Kowalczewski PŁ, Kmiecik D, Tomczak A, Drożdżyńska A, Ślachciński M, Szala Ł, Matić S, Marković T, Popović S, Baskic D, Kačániová M. Seaweed Nutritional Value and Bioactive Properties: Insights from Ascophyllum nodosum, Palmaria palmata, and Chondrus crispus. Life (Basel). 2024 Nov 20;14(11):1522. doi: 10.3390/life14111522. PMID: 39598320; PMCID: PMC11595611. https://pmc.ncbi.nlm.nih.gov/articles/PMC11595611/

Lomartire S, Marques JC, Gonçalves AMM. An Overview to the Health Benefits of Seaweeds Consumption. Mar Drugs. 2021 Jun 15;19(6):341. doi: 10.3390/md19060341. PMID: 34203804; PMCID: PMC8232781.https://pmc.ncbi.nlm.nih.gov/articles/PMC8232781/

Shannon E, Conlon M, Hayes M. Seaweed Components as Potential Modulators of the Gut Microbiota. Mar Drugs. 2021 Jun 23;19(7):358. doi: 10.3390/md19070358. PMID: 34201794; PMCID: PMC8303941. https://pmc.ncbi.nlm.nih.gov/articles/PMC8303941/

Khalifa M, Aftab HB, Kantorovich V. “Fueling the Fire” - Irish Sea-Moss Resulting in Jod-Basedow Phenomenon in a Patient With Grave’s Disease. J Endocr Soc. 2021 May 3;5(Suppl 1):A906. doi: 10.1210/jendso/bvab048.1849. PMCID: PMC8090171. https://pmc.ncbi.nlm.nih.gov/articles/PMC8090171/

Enyoh CE, Shafea L, Verla AW, Verla EN, Qingyue W, Chowdhury T, Paredes M. Microplastics Exposure Routes and Toxicity Studies to Ecosystems: An Overview. Environ Anal Health Toxicol. 2020 Mar;35(1):e2020004. doi: 10.5620/eaht.e2020004. Epub 2020 Mar 25. PMID: 32570999; PMCID: PMC7308665.https://pmc.ncbi.nlm.nih.gov/articles/PMC7308665/