Silk Bliss Protein Re-filler Treatment is created using the most innovative hair straightening technology. Its formula does not contain formaldehyde, ensuring long-lasting and perfect hair by reducing frizz and volume while providing shine, naturalness, and softness. It is made up of Amino Acids and Silk Protein. This treatment combines the benefits of Keratin with the characteristics of Cysteine. It is a unique complex created with ‘Capillary Realignment Shielding’ technology to promote a smooth effect.