INCI Water & Phospholipids & Biotin & Leuconostoc/Radish Root Ferment Filtrate
Cas 7732-18-5, 123465-35-0, 58-85-5, 168112-10-6(84775-94-0)
Biotin, also known as vitamin B7, stimulates keratin production in hair and can increase the rate of follicle growth. It is not stored for long in the body - most of yours is from the foods you eat. In order to be effective, it needs to be consumed.
According to a 2017 review in the journal Skin Appendage Disorders, the evidence that biotin reduces hair loss is pretty thin, but it remains a popular supplement for hair, skin, and nail growth.
But it does seem your hair stronger, and intuitively it will be less prone to fall out.