Labo Cosprophar Volume Shampoo Volumizing shampoo for men, strengthens and thickens fine hair. They become more resistant to environmental influences. Palmitol myristile serinate, serine and threonine help to strengthen the hair cell’s intercellular layer, giving volume to slender and difficult to comb hair. Contains 3 different molecular weight hyaluronic acids that restructure and replenish hair fibers.