Biotin is currently the most powerful active to produce keratin and strengthen hair, especially curly and frizzy hair, which tends to be finer and more brittle. The Next Day My Perfect Curl Golden Drop hairdressing cream with Biotin strengthens the strands, in addition to hydrating and hydrating for a long period, keeping your curls or curls wonderful in the days after washing and hydration. Stay even more beautiful for longer with Next Day My Perfect Golden Drop Hair Styling Cream.