Thalia Pro Keratin Biotin Shampoo combines advanced keratin technology with biotin to strengthen and revitalize hair. This 300 ml formula penetrates the hair shaft, repairing damage and restoring elasticity for a smoother, shinier finish. Biotin enhances hair resilience while keratin fills micro-gaps, reducing breakage and frizz. Ideal for weakened or chemically treated hair seeking professional-grade restoration. Experience noticeably healthier, more manageable hair with regular use.