Colloidal effect on the spreading of carbon-based conditioning agents on hair

Shampoo hair conditioning is a complex process involving various physico-chemical factors affecting the interaction between the hair surface and conditioning formulations. It typically entails applying formulations containing surfactants, cationic polyelectrolytes, and silicones onto the hair surface, requiring a thorough examination of the underlying principles. Silicones are commonly used for their lubricating action and ability to restore hair's hydrophobicity, providing a long-lasting softness and shine. However, their environmental impact and potential for skin irritation have led to a shift towards natural oils as alternatives. Research in this area aims to understand these phenomena and develop innovative silicone-free formulations. In this contribution, we investigate the aggregation and surface properties of these formulations, determining critical micellar concentration and micelle size using techniques like Dynamic Light Scattering (DLS) and Confocal Laser Scanner Microscopy (CLSM). We also explore the impact of conditioning agents on coacervation processes and adsorption on hair surface using Atomic Force Microscopy (AFM). The findings offer insights for designing new, environmentally and biologically compatible hair care products. By reducing reliance on silicones and embracing natural alternatives, the industry aims to create formulations that maintain effectiveness while minimizing environmental harm and potential health risks, contributing to sustainable and healthier hair care practices.