PREMIUM QUALITY – Our vegan biotin supplement are proudly manufactured in the UK under the highest quality standards, our hair growth vitamins do not contain any artificial colours or flavours nor any heavy metals or unwanted compounds. The product is Vegan friendly and gluten free. THIRD PARTY LAB TESTED - Each ingredient is quality tested before our manufacturing process begins, once completed our biotin supplement undergoes further rigorous quality testing. Our Biotin has been 3rd party tested for heavy metals and unwanted compounds by UK & Europe's largest testing facilities (Eurofins) The lab is UKAS accredited according to ISO/IEC 17025:2017. WHY NEW LEAF? – New Leaf Products is a recognised and trusted Vitamin & Supplement brand providing thousands of customers across the globe with high quality products. Our premium quality products are manufactured and formulated in the UK under the highest quality standards our products are then independently lab tested for heavy metals and unwanted compounds to ensure our products meet the highest quality standards. ADDED ZINC & SELENIUM – Our unique formula contains Zinc and Selenium as they both offer many health benefits, such as the maintenance of normal hair skin and nails. Zinc also contributes to the normal function of the immune system and bone health. Selenium also supports hair and nail health as well as contributing to normal thyroid function. WHAT IS BIOTIN – Also known as Vitamin H, biotin is one of the water-soluble B vitamins which contributes to the maintenance of normal hair and skin, as well as normal functioning of the nervous system. Biotin is the most popular Beauty vitamin and is commonly taken to support healthy hair growth and nail health.