How to Preserve That Red Hair Color

Ahhh, the anomaly of red hair color -- we go for reds because of their richness and vibrancy, and yet, they are the colors to fade and dull the fastest. Sigh... Why does this infuriating phenomenon happen? A scientific explanation does, in fact, exist. You see, red hair molecules are the smallest of the hair color molecules which makes it easiest for them to penetrate the hair cuticle (yeay!), but also the easiest to exit the hair cuticle (nooooo!). This explains the immediate luscious vibrancy ...