Sea kelp is a rich source of many vitamins and minerals. As a dietary supplement, sea kelp is touted by many to boost metabolism, improve the condition of skin and hair and increase energy. Many sea kelp shampoo purveyors claim that sea kelp can help stave off hair loss when applied to the scalp in the form of sea kelp shampoo, though this has not been proven in any clinical trials.
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Zinc is a trace mineral that is crucial to the maintenance of normal body functioning. Zinc plays a role in cell reproduction, vitamin absorption, hormone balance and--most importantly for your hair--protein synthesis, according to the Eck Institute of Applied Nutrition and Bioenergetics. Hair is made of protein, and if your body isn't making enough of it, you will see it in your brittle or thin hair. Applying zinc directly to the cuticle via sea kelp shampoo will introduce zinc directly to the follicle, where hair proteins are made.
Sea kelp contains the complete complex of B vitamins, all of which are necessary for your body to produce healthy hair, according to Hair Boutique. B vitamins are crucial for maintaining healthy blood haemoglobin levels. Haemoglobin binds to iron, another critical vitamin for hair growth. Introducing B-vitamin complex to the scalp may fortify the haemoglobin in the skin, resulting in more iron-rich blood and better hair growth.
One reason for hair loss is the calcification of the hair follicle, according to the website Re-grow Hair. This can be caused by many things such as disease, the ageing process or a vitamin deficiency. Magnesium blocks the calcification process and introducing magnesium to the hair and scalp with sea kelp shampoo may slow the process of hair loss. In fact, magnesium oil on its own is sold as a naturopathic hair loss cure.
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