Strengthening Fluid with Collagen for a Vital Scalp | Stronger, Thicker and More Resistant Hair Starts with a Healthy Scalp. Collagen Care Color WOW Youth Juice combines active ingredients that strengthen the roots, promote microcirculation and protect the natural structure of the hair. With each application, it helps create optimal conditions for growth and improves the overall quality of the hair. The light texture is quickly absorbed, does not leave a greasy feeling and gives the hair strength and fullness day after day.