Biosilk Silk Therapy Smoothing Balm is a luxurious smoothing balm that smoothens the cuticle layer while eliminating any roughness. It provides incredible shine and manageability by extracted herbal oils. Prepares the hair for Silk Therapy Smoothening Solution. Smoothing Balm is the ultimate smoothing tool for all hair types. On straight hair it will provide maximum smoothness and incredible shine. On curly hair, it will eliminate frizz and create perfects curls.