Does Irish Sea Moss Help Hair Growth? How To Use It

Word about hair care street is that you can use Irish sea moss for hair growth. But unfortunately there is hardly any evidence to support this claim. However, there are other ways you can use Irish sea moss to promote hair health. You may have even noticed this edible red algae seaweed in many cosmetic products. In this article, we’ll explain how to use Irish moss to your hair’s benefit and maximize the potential benefits of hair care. Read on to know more.

What is Irish Sea Moss?

Irish sea moss or Chondrus crispus is a red edible seaweed (red algae) mainly found in the North Atlantic Ocean. The cell walls contain carrageenan, an additive used as a thickener, emulsifier and stabilizer in the food industry (1).

Seaweed extract is widely used in skin care and hair care products for its nourishing and moisturizing properties. However, Irish sea moss is also said to promote hair growth. While there is no evidence to support this claim, Irish sea moss may help promote scalp health, improving your overall hair health. Let’s see how.

Irish Sea Moss and Hair Growth: Is There a Connection?

Irish sea moss has several benefits that can affect the health of your scalp (2):

1. Wound Healing

Animal studies have shown that carrageenan can minimize the inflammatory process of the skin, enhance the deposition of extracellular matrix (a 3D network made up of collagen and other macromolecules) and promote wound healing (3). This property can also help keep your scalp healthy and maintain hair health.

2. Can Prevent UV Damage

Irish sea moss contains mycosporin-like amino acids (MAA) that protect marine organisms from UV exposure. MAAs are used in cosmetic products to protect the skin from UV rays and promote cell proliferation (2). When used in hair care products, these ingredients can help protect your scalp and hair from UV damage.

3. Can Moisturize The Scalp

Hydration is crucial to maintaining the overall health of the scalp and hair. Dried out hair can be brittle and prone to breakage. Red algae (Chondrus) can nourish and moisturize the skin when used topically and improve cell elasticity (2).

4. May Promote Hair Growth

An animal study found that a hair tonic made from seaweed extract might promote hair growth (4). However, the study did not specify the type of seaweed used for the experiment.

5. Can Improve Hair Shine

Fucoidan is a component found in all seaweeds, including Irish sea moss. This component can eliminate harmful free radicals, reduce inflammation, improve hair health and make your locks shiny (2). Oxidative stress (caused by free radicals) can affect scalp health and cause hair loss. Fucoidan can help reduce hair loss.

Irish sea moss may not directly promote hair growth, but it can support and influence scalp-related factors to promote the health and regrowth of your hair. It is a common ingredient in many hair care products and is widely available in gel form. Here’s how to use Irish Sea Moss gel for your hair.

How to use Irish sea moss

1. As pre-poo

  • Detangle your locks with a wide-tooth comb.
  • Divide your hair into several sections and cut them.
  • Apply a generous amount of the Irish Sea Moss hair gel to the sections. Cover each strand evenly from root to tip.
  • Apply the gel on the scalp.
  • Leave it on for 30 minutes to an hour.
  • Rinse the gel and follow your normal hair washing routine.

2. As a mask after washing

  • Shampoo and condition your hair. Rinse thoroughly.
  • Squeeze out the excess water and divide your hair.
  • Apply a dollop of gel to damp hair and scalp.
  • Leave it on for at least 30 minutes and wash it off with plain water.

Remark: For best results, use the gel as a deep conditioner at least once a week.

3. As a styling product or leave-in conditioner

  • Shampoo and condition your hair.
  • Squeeze out the excess water and detangle with a wide-toothed comb.
  • Apply the Irish Sea Moss gel to your hair from mid to tip. Avoid the scalp.
  • Blow dry and style your hair as desired.

Instead of buying Irish sea moss gel, you can easily prepare it at home. DIY recipes contain no preservatives and are less harmful. Check out the recipe below.

Homemade Irish Sea Moss Gel Recipe


  • 1 cup dried sea moss
  • 2 teaspoons avocado oil
  • 2 teaspoons olive oil
  • 2 cups of water

The recipe consists of two parts. First you need to prepare the seaweed gel and then the hair gel.


For preparing seaweed gel

  1. Soak the dried sea moss in water. Let it rest overnight.
  2. The next morning, strain the water and set the soaked sea moss aside.
  3. Boil the seaweed in a cup of water. Keep stirring until the texture becomes creamy.
  4. Mix the creamy seaweed with half a cup of water for a minute. Add another half cup of water and mix again.
  5. Transfer the seaweed gel to a glass jar and refrigerate for 3-4 hours.

For The Seaweed Hair Gel

  1. Scoop out 2-3 tablespoons of the seaweed gel and boil it with half a cup of water for 2-3 minutes.
  2. Transfer the melted gel to a container and add the oils. Mix it well.
  3. You can add a few drops of essential oils for fragrance. However, it is optional.
  4. Keep the sea moss gel in the fridge and use it to style your hair.

To conclude

Seaweed or sea moss is a common ingredient in skin and hair care products. Irish sea moss can soothe scalp irritation, strengthen strands, prevent hair loss and improve hair shine. It may also promote hair growth, but further studies are needed to prove the claim. If you want to give it a try, follow the recipe to prepare the hair gel.

Key learning points

  • Sea moss can improve scalp health, strengthen strands, protect hair from UV damage and promote hair shine.
  • There is a lack of evidence to suggest that it promotes hair growth.
  • You can use it as a serum, in conditioners or as a homemade hair gel to get its benefits.


Articles on Health Related Information are backed by verified information from peer-reviewed and academic research papers, reputable organizations, research institutions, and medical associations to ensure accuracy and relevance. Read our editorial policy for more information.

  1. Chondrus Crispus
  2. Seaweed as a source of bioactive substances and skin care therapy€”Cosmeceuticals, algotherapy and thalassotherapy
  3. Carrageenan hydrogel as a scaffold for the delivery of skin-derived multipotent stromal cells
  4. Effect of seaweed extract on hair growth promotion in experimental study of C57BL/6 mice.

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