Making Seaweed Shampoo Bars


I finally made shampoo bars they have bee on my to do list for a long time now. Shampoo bars are great, they are free of sulfates, silicones, and chemicals contrary to conventional shampoos (just take a look at the ingredients on your shampoo bottle). These bars are also perfect for traveling and are eco-friendly (yes, no more plastic bottles!)

My hair is thin with oily roots and dry ends. Ocasionally I suffer from dandruff and have noticed an increase on my hair loss. I made shampoo bars to help me with these conditions using rosemary, peppermint, seaweed, and nettle.

*Seaweed Powder is a rich source of vitamins including vitamins B12 (not found in land plants), vitamin E, amino acids, minerals, trace elements, and other nutrients. It makes for an effective cleansing and exfoliating agent. When used on the skin, Seaweed acts as a powerful detoxifier that draws out toxins and impurities while adding beneficial nutrients.  It contains fatty acids to combat skin irritation and inflammation and may assist with skin ailments such as acne, psoriasis and eczema. Seaweed Powder is suitable for all skin types.

*Rosemary contains riboflavin (vitamin B2). When applied to skin and hair it aids in the regeneration of healthy cells. In shampoo, it encourages faster-growing and stronger hair. Rosemary oil stimulates hair follicles and helps the hair to grow longer and stronger. It also slows down premature hair loss and is beneficial for dry, flaky scalps. With a regular massage of the scalp, the oil will nourish it and help to remove dandruff.

*Peppermint acts as an astringent, normalizing both dry and oily hair.  When applied to oily skin or scalp it helps reduce any excess oil. An oily scalp can lead to greasy hair, and the peppermint helps to regulate your scalp’s oil production and eliminate the grease. Peppermint oil can soothe skin irritations and relieve pain and itching. This makes it ideal for those who have dry or irritated scalps, as it can help fight dandruff and eliminate the itching associated with this condition.

*Nettle increases blood flow to your scalp. It also oxygenates your hair follicles and strengthens hair fibers, promoting healthier, shinier, fuller hair. It is also used to treat dandruff.

To make the shampoo, I first made a hot water herbal infusion with rosemary, peppermint and nettle. I left it covered overnight.



Next day I made my lye solution with the herbal water infusion.
*The lye solution picture (below) is not from this batch of soap. Unfortunately I forgot to take a picture for this batch, but you get the idea of how it is prepared.



I measured and melted all my oils and shea butter and prepared my additives (seaweed powder, herbs from infusion & essential oils).




Once the lye solution was added to the oils, I blended everything until it reached trace (became thicker).



After that, I divided the mixture into 2 equal parts and added seaweed powder to one half and some herbs from the infusion to the other half.  I also added the essential oils blend to both mixtures and stirred until everything was incorporated.




Then I poured the soap into my clean and sanitized Pringles can using the faux-funnel pour technique (poured some of the seaweed mix, then some of the herb mix and kept going using that pattern until there was no more soap left.)




After 24 hrs. I cut the soap and placed my bars on the curing rack, where they will stay for 4-6 weeks to dry and harden.


This is how they look.  All of them have different patterns.


These bars will be ready between Feb. 8 – Feb. 22 on my Etsy Store.

*Note: If you have never used shampoo bars before your hair may need to go through a short transition period seeing that it is different than your regular (chemically prepared) liquid shampoo. Your hair will feel different than usual after shampooing with an all natural bar.

Give it some time and use an apple cider vinegar rinse after you shampoo with your new bar. It removes buildup & residue from the scalp and hair and evens out the PH, causing the cuticle to lie flat, giving you amazing shine and softness. Just spray some on your hair and leave it on or rinse if you like. The vinegar smell does go away when the hair is dry!

*I will also have a Rosemary Mint Vinegar Rinse on my store, once the bars are ready, and a blog post so you can see how it is done.

{Rosemary Mint} Seaweed Shampoo Ingredients:
Saponified oils of coconut, olive, castor, avocado, palm, jojoba, shea butter, seaweed powder, rosemary, peppermint & nettle water infusion, rosemary & peppermint essential oils


2 thoughts on “Making Seaweed Shampoo Bars

    • Hi Kerry,
      Yes, these are cold-process shampoo bars and they do contain lye. The word saponified in the ingredients list implies they have been mixed with sodium hydroxide (lye) and a liquid. Of course once everything is mixed and saponification taken place there is no lye present in the final product.

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