The Cantu Flexible Hold Moisture Retention S is a hair care product designed to provide flexible hold while retaining moisture in the hair. The key active ingredient in this product is Aqua (Water), which serves as a solvent for other ingredients and aids in the dispersion of the product on the hair shaft. Additionally, Cetyl Alcohol and Stearyl Alcohol act as emollients, helping to soften and condition the hair. Other key ingredients in this product include Ceteareth-20 and PEG-40 Hydrogenated Castor Oil, which function as emulsifiers, helping to stabilize the mixture of water and oils in the product. Glycerin serves as a humectant, attracting and retaining moisture in the hair, while Polyquaternium-37 helps to provide a flexible hold by forming a film on the hair shaft. The pH of this product is around 4.5-5.5, which is within the optimal range for hair care products to maintain the health and strength of the hair. The viscosity of the product is moderate, allowing for easy application and distribution on the hair. Upon application, the ingredients in the Cantu Flexible Hold Moisture Retention S interact with the hair shaft by forming a protective barrier that helps to lock in moisture and provide a flexible hold. The emollients and humectants in the product help to condition and soften the hair, leaving it feeling smooth and hydrated.