sikapur VITAL SHAMPOO + BIOTIN - Strengthens hair and adds volume Sikapur VITAL SHAMPOO + BIOTIN contains silica, biotin, and wheat proteins. These provide optimal nourishment for healthy and beautiful hair. The shampoo strengthens the hair and adds volume; it is pH-neutral and provides the scalp with essential moisture. Especially suitable for thin, dry or normal hair, as well as for sensitive scalps. Note: Vegan. Free from parabens and silicone.