Softsheen Carson Optimum Smooth pH Normalizer Post Relaxer Treatment/16.9oz Softsheen Carson Optimum Professional Opti pH Normalizer and Moisturizer is a professional-grade post-relaxer treatment designed to restore natural pH balance to hair. This Step 3 formula improves elasticity and provides essential moisture after chemical services. The 16.9 fl oz (500 ml) bottle ensures multiple applications for maintaining healthy, smooth hair. Ideal for salon use or at-home hair maintenance following a relaxer application. #Professional