Selenium is a trace-element, tiny amounts of which are needed in order for the body to function properly.
It is involved in many essential functions, including maintaining the immune system, producing thyroid hormones and metabolising testosterone.
It also helps protect cells against oxidative stress by supporting the synthesis of glutathione-peroxidase, a well-known antioxidant enzyme that occurs naturally in the body.
Finally, selenium plays an effective role in maintaining healthy hair by promoting growth, preventing loss (as a result of its antioxidant properties which protect hair follicles from oxidative stress) and improving the quality of the scalp. But should you really be adding a selenium supplement to your ‘haircare routine’?
While selenium plays a key role in the health and appearance of the hair, supplementation is really only beneficial if you are deficient in this trace-element.
Several studies (1-2) have shown that inadequate selenium intake (below 55μg a day), leads to impaired hair growth and pigmentation, causing problems such as hair discolouration and loss (alopecia). These same studies have also shown that supplementation at sufficient levels can help to restore healthy hair within 6 months.
However, for people with an adequate selenium intake (which is the case for most Western populations), supplementation will not make the hair healthier, shinier or more beautiful. Indeed, excessive intake could worsen its condition (3-4) and even lead to accelerated hair loss.
Though relatively rare in developed countries, selenium deficiency is still thought to affect between half a million and a billion people worldwide.
Typical symptoms include marked fatigue, decreased muscle strength, mood swings, irritability, frequent vomiting, increased susceptibility to infection, thyroid dysfunction and… hair problems. In the most severe cases, it can even lead to heart and joint damage.
On the other hand, excessive, prolonged intake is associated with a risk of selenium poisoning, resulting in brittle hair and nails, increased skin sensitivity and intense fatigue. The tolerable upper intake level for adults has been set at 400µg a day.
Individuals most affected by selenium deficiency are those living in regions with naturally low levels in the soil, such as New Zealand and China (5), as well as people who have undergone chemotherapy or who suffer from serious intestinal diseases such as Crohn’s or ulcerative colitis.
Ensuring an adequate selenium intake is easy insofar as it’s found in many common foods (tuna, mackerel, sardines, seafood, eggs, meat, offal, mushrooms, nuts…) A portion of fish or nuts (peanuts, Brazil nuts, almonds …) is enough to meet the recommended daily intake.
Those who are deficient may want to take a selenium supplement under the supervision of a health professional. Opt for L-selenomethionine, the form with the best bioavailability.
For those still looking to make their hair stronger and shinier, there are fortunately other supplements which are effective and reliable.
Zinc is another trace-element which helps maintain healthy hair by supporting growth and maintaining the hair follicle.
A number of studies have shown those affected by hair loss to have inadequate zinc levels.
In terms of supplementation, choose zinc bisglycinate with high bioavailability (try, for example, Advanced Zinc Bisglycinate Lozenges).
Also known as the ‘beauty vitamin’, biotin helps to maintain healthy hair by contributing to keratin synthesis, a key component of hair, representing 95% of its composition.
As the body can neither produce nor store biotin effectively, we have to obtain a regular supply from the diet or rely on appropriately-dosed supplements (such as Biotin).
When a new hair forms in the absence of sufficient keratin, the result is dull, brittle hair (6-7).
It therefore features as a star ingredient in many supplements targeted at hair health and beauty.
Keratin is particularly beneficial when it’s in a form optimally-absorbed by the body: solubilised keratin (such as that used in Daily Beauty).
There are some synergistic formulations targeted at the health and appearance of the hair in which these three compounds are combined, along with a number of other beneficial micronutrients such as MSM and choline, at carefully considered doses (one such example is Hair & Nails Formula).
References
72 Days
Great company to deal with. I receive their products quicker than my orders from Sydney Australia. Well done.
HARDY Chris
79 Days
Fast and easy once again.
Niels Groving
83 Days
The shipping & delivery is quite efficient to me !
LEUNG Wing Chau
85 Days
Easy to deal with, good website and excellent product
STONEHOUSE Kim
85 Days
Well from my placing order to delivery !!!
DILLON Patrick M
86 Days
Site easy to handle, Information clear and simple, price affordable, quick delivery
Paulo Teixeira
88 Days
Bon service
Keith Ross
90 Days
Excellent product and delivered at a good price
Jim
90 Days
I bought super ashwagandha, super Maca, and adrenal support. Very good products. It helps with thyroid and adrenal gland problems. Fast delivery, happy customer!
LIEBENS Kim
91 Days
Speedy and efficient service (via FedEx).
Barry Humphries
93 Days
The ordered item quite efficiently delivers to me !
LEUNG Wing Chau
93 Days
Just perfect
Leny bermondsey
93 Days
Very good, and very efficient.
Mo
95 Days
Excellent and thrustworthy!
KLAVENES Bjorn
102 Days
I am very happy with the products, they are clean and strong. You get real improvment in health. But your resent change with the desing of packets is stylish but not attractive. Also I wish back the fast delivery.
MU