Biotin
(Vitamin B7)

Biotin, also known as Vitamin B7 or Vitamin H, is a water-soluble B-complex vitamin that plays a central role in cellular metabolism. It functions as a coenzyme for several carboxylase enzymes — proteins that are critical for the metabolism of fatty acids, amino acids, and glucose. These metabolic pathways are essential for the energy-intensive process of hair follicle cycling and the synthesis of keratin.

Hair follicles are among the most rapidly dividing cells in the human body. Because of this, they have high metabolic demands, and any nutritional gap that disrupts cellular energy production can affect the hair growth cycle. Biotin deficiency, while relatively uncommon in the general population, can cause brittle hair, hair loss, and brittle nails.

Biotin is also directly involved in the metabolism of amino acids, including those that form keratin itself. This makes biotin a supportive co-factor for keratin synthesis, which is why it pairs naturally with Cynatine® HNS in the HAIRLOVE Growth Complex formula.

An important note is that research consistently shows biotin's benefits for hair and nail health are most pronounced in individuals with an underlying deficiency or specific hair and nail conditions, such as brittle nail syndrome.

HAIRLOVE includes biotin as one of eight supportive nutrients within a broader evidence-based formulation, rather than relying on it as a standalone solution for hair growth.