Olaplex No. 4P Bond Maintenance Shampoo is a haircare product that is part of the Olaplex system, known for its bond-building technology. This shampoo is designed to gently cleanse and nourish the hair while helping to repair and strengthen damaged bonds in the hair. It works to maintain and improve the overall health and appearance of the hair, making it look smoother and shinier. Wet your hair thoroughly, then apply Olaplex No. 4P Bond Maintenance Shampoo. Massage it into your scalp and hair, creating a rich lather. Rinse thoroughly with water and follow with your preferred conditioner. It's recommended for use in combination with other Olaplex products for best results.