Weakened and structurally damaged hair,-Wella Sp, Molecular Hair Filling Fluid, 100ml, Hair breakage due to chemical treatments,-Wella Sp, Molecular Hair Filling Fluid, 100ml, Lack of strength and resilience in fine or brittle hair,-Wella Sp, Molecular Hair Filling Fluid, 100ml, Uneven hair texture and roughness,-Wella Sp, Molecular Hair Filling Fluid, 100ml.