The powerful ingredients in Actsyl-3 Hair Growth Serum target the three main problem areas to support hair growth, thickness and a healthy scalp. A relatively new, four amino acid peptide that promises to help combat hair loss alongside red clover extract as part of the trademarked technology Capixyl. The main thing of Acetyl Tetrapeptide-3 is to stimulate the synthesis of key Extra Cellular Matrix (aka ECM, the gooey stuff between cells that make up the framework of our skin) components in the scalp. According to the manufacturer’s lab studies, the expression of type III collagen increased by 65% and the expression of laminins (anchoring proteins found in the ECM) was up a massive 285%, resulting in a stronger ECM bed for hair anchoring. Together with red clover extract, the duo has a synergistic action and works to combat hair loss thanks to a neat multi-faceted approach: it not only stimulates important ECM components but also inhibits the DHT-causing 5-a-reductase enzyme (DHT is the annoying hormone largely responsible for male pattern baldness) and reduces micro-inflammation around hair follicles. The manufacturer’s study over 4 months showed the total impact of Capixyl was an increased anagen (growth phase)/telogen (resting phase) ratio of +46%, resulting in significantly denser hair. All in all, Acetyl Tetrapeptide-3 is a promising ingredient in the fight against hair loss, but as the only results we could find were from the manufacturer, take these claims with a pinch of salt until more research is done. Is biotin good for hair growth? 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. Biotinoyl tripeptide-1 (Biotinyl-GHK) lessens the production of DHT (dihydrotestosterone), the primary contributing factor in male pattern baldness, increases hair growth, stimulates hair-strengthening genes and increases the population of anagen hair, which is the active growth phase of hair follicles. • Proven to increase follicle size and vitality • Better root hold for less shedding • Thicker hair shaft for increased volume.