SWIISH’s Hair and Metabolism is scientifically formulated to support hair growth and metabolism function and is made up of Ascophyllum nodosum whole plant powder (250mcg iodine), zinc amino acid chelate (15mg zinc equivalent), riboflavin (vitamin B2) and biotin. It is gluten-free, vegan and tree nut free. The formula claims to support:

• Hair growth and health
• Metabolism 
• Energy production
• Nail health
• Healthy thyroid gland support  
• Skin support

Research is cited on their website for the key ingredients included which is great to see and adds to the product’s credibility. Read more on SWIISH website. 

Iodine is a crucial nutrient required by the body for optimal thyroid health. Our thyroid hormones are responsible for several processes including growth, development, metabolism, and reproduction. It is worth noting that caution is needed with pregnant women who might already be taking an iodine supplement and those with pre-existing thyroid conditions. Consult with your healthcare practitioner before taking this product. Whilst most of us get enough iodine in our diets if we consume iodised salt, additional iodine support may be required in some individuals. 150mcg is the recommended daily intake, and this product provides 250mcg which falls under the upper limit for iodine intake.⁴ SWIISH also use a plant source of iodine, like JS Health which is a good quality source of iodine. 

Zinc is an essential nutrient for hair, skin and nails, and is a great addition to this formula. The form of zinc used is absorbed well by the body and each capsule provides the equivalent of 15mg of zinc, which is a supportive dose. Some people can experience nausea after taking zinc so I would recommend taking this product with food (preferrable in the morning with breakfast). 

B2 is a water-soluble B vitamin that has strong antioxidant functions and plays an important role in metabolic reactions – specifically the metabolism of carbohydrates, fats and proteins. The formula contains 5mg, which is higher than the daily recommended intake of 1.1mg for women, however, there are no risks associated with higher intakes of B2. B2 is a good addition to this formula and is not included in the JS Health Hair and Energy or Beauty Chef Metabolism and Sugar Balance. 

Biotin is required by all organisms and acts as a cofactor in metabolic reactions within the body. Biotin is commonly referred to as the key nutrient for hair and nail support, and whilst the research is limited, the available evidence supports its use.⁵ However, higher doses (1,000mcg+/day) have been reported as more effective for hair loss – SWIISH’s Hair and Metabolism provide 75mcg with each capsule. 

This is a good formula for hair, skin and nails and provides some of the key nutrients required by the body for healthy metabolism however, there are other variables that need to be considered when it comes to metabolism – diet and exercise. We must eat a balanced diet, eat regularly (extended periods of fasting can disrupt our metabolism) and move our bodies often. If you aren’t already doing these things, this supplement alone will not improve your metabolism. If you are currently prioritising your diet and exercise, this supplement may provide additional support for healthy metabolism.