Protects and strengthens hair after chemical services. Balances pH and supports hair integrity. Use before shampoo for improved bond strength. Lightweight cream texture absorbs easily. Redken Redken pH-Bonder Post-Service Protector 5.1 fl oz is a salon-quality hair product designed to support everyday styling and care. It helps deliver benefits such as helps strengthen and repair damaged hair, helps improve manageability, and leaves hair feeling soft and refreshed. Ideal for users seeking professional performance and a polished finish.