The Science of Hair Nutrition: Biotin, Zinc & Selenium
HARROWDEN NUTRITION INSIGHTS
Evidence-aware perspectives on ingredients and everyday nutrition.
Why hair nutrition matters
Hair appearance and hair growth are influenced by age, genetics, hormonal status, overall health and dietary intake. A balanced diet is an important part of caring for the body, but no single ingredient can address every cause of thinning or hair changes.
Biotin: an established nutritional role
Biotin (vitamin B7) is involved in normal macronutrient metabolism and contributes to the maintenance of normal hair. Although it is frequently promoted for hair beauty, evidence that extra biotin improves hair in otherwise well-nourished people is limited. High-dose biotin may also interfere with certain laboratory tests, so healthcare professionals should be informed before testing.
Zinc and selenium: small nutrients, important functions
Zinc contributes to the maintenance of normal hair, skin and nails. Selenium also contributes to the maintenance of normal hair and the protection of cells from oxidative stress. Both can be obtained from a varied diet. Excessive supplemental mineral intake is not advisable; higher doses are not necessarily better.
A considered formulation
Harrowden Hair Fullness™ brings together L-cysteine, spermidine-rich wheat germ extract, biotin, zinc and selenium. It reflects a focused approach to everyday hair nutrition without promising regrowth or treatment of hair loss. For sudden or persistent hair changes, seek advice from an appropriate healthcare professional.
References & Further Reading
Important information: Food supplements should not replace a varied, balanced diet and a healthy lifestyle. Hair Fullness™ contains wheat-derived ingredients and high-dose biotin; please consult the product label for full warnings. This article is educational and does not provide medical advice.
