Keratin fibers exhibit insufficient retention of exogenous pigments during washing and daily wear. Enhancing color fastness prevents premature fading and maintains aesthetic consistency.

Keratin fibers suffer from structural collapse and poor retention of volumizing treatments. Overcoming these degradation mechanisms ensures long-lasting aesthetic and structural modification of hair.

Incompatibility between reactive silane components leads to premature polymerization or phase separation. Achieving a stable mixture ensures consistent application and shelf-life performance.