Unlock the secret to naturally vibrant hair with L'Oreal Paris Prodigy Frosted Hair Color, the first ammonia-free permanent color. Infused with innovative micro-oil technology, this product seamlessly integrates new tones with your existing hair color, ensuring uniformity and thorough coverage from roots to ends.Struggling to choose your ideal shade? For the most natural look, opt for the lighter of two similar shades, particularly if you have grey hair, as the color will manifest slightly lighter. Ensures full scalp-to-tip coverage, blending seamlessly with multiple hair shades. Allergy test recommended 48 hours prior to use. Enhances hair quality, offering intense softness and exceptional shine. Simple Application: Combine the coloring cream with the developer, apply evenly starting from the roots and extend through the lengths, wait for 20 minutes, then rinse and treat with the nourishing mask.