Polyquaternium-64

Polyquaternium-64 is a positively charged conditioning polymer derived from cellulose, a natural plant-based material. It belongs to a class of ingredients known as quaternary ammonium compounds, which are widely used in hair and personal care products for their conditioning properties.This ingredient works primarily as a hair conditioning agent, depositing onto the hair shaft to improve texture, reduce frizz, and enhance overall manageability. It is not typically used in facial skincare products but rather in shampoos, conditioners, and other hair care formulations.

Polyquaternium-64 has a positive electrical charge that allows it to bind to hair fibres, which carry a negative charge. This electrostatic attraction helps the polymer adhere to the hair surface, forming a conditioning film that smooths the cuticle layer and reduces friction between strands.This coating effect improves hair slip, reduces tangling, and can enhance shine and softness. The ingredient is particularly useful in rinse-off products like conditioners, where it can be easily removed during the next wash cycle.

Polyquaternium-64 is typically found in conditioners and other rinse-off hair products rather than leave-on formulations. Apply according to product instructions, usually after shampooing. For best results, allow the product to sit on damp hair for a minute or two before rinsing thoroughly. If using in a leave-on product, ensure it is applied to mid-lengths and ends rather than the scalp, as conditioning polymers can feel heavy on the roots.

Polyquaternium-64 is generally well-tolerated and has a good safety profile when used as intended in rinse-off hair care products. It is not typically associated with irritation or adverse reactions in the general population.