If you have color-treated hair that gets dull or fades, let's talk about the science behind it. I looked into the Color Shine Vinegar from Yves Rocher, and its key ingredient is Raspberry Vinegar. 🔑 From a formulation standpoint, 🔬 this vinegar's acidic pH helps to seal the hair cuticle. Sealing the cuticle does two main things: it locks in color to prevent it from fading, and it creates a smooth surface that reflects light, giving you a major shine boost. It also removes dulling mineral build