Achieve sleek, salon-style locks with the System Professional Smoothen Shampoo; a lightweight formula that works to cleanse & detangle curly, unruly hair. Fortified with the brand's Energy Codeâ„¢ Complex, the shampoo eliminates impurities without affecting the hair's natural p H balance, whilst taming rebellious strands from root to tip for a smooth, frizz-free finish. Hair is calm, manageable & more responsive to styling.