L'Oréal Professionnel Inoa Permanent Hair Dye 4.15 Ash Mahogany Brown 60g and nbsp;now has a new formula with improved results. This ammonia-free hair dye offers a permanent coloring solution with optimal results and great comfort. Indeed, this new formula has some features that differ from the old one. Firstly, the formula is vegan, free from ingredients of animal origin. Secondly, it is a fluid formula thus being faster and easier to apply and extend to the lengths as well as to mix and rinse. Thirdly, this new formula offers 48% more shine than the previous one. And lastly, it presents a more sustainable image with a tube made of 95% recycled aluminum. Always delivering a professional result, this hair dye guarantees long-lasting color with healthier-looking hair. In particular, this shade is part of the cool brown shade family. Characteristics Color 4.15; Permanent hair dye; Covers 100% of grey hair; Ammonia-free and formulated without ingredients of animal origin; Offers increased shine; Grants optimal scalp comfort; Fast and easy to apply, mix, and rinse. Precautions DEVELOPED FOR PROFESSIONAL USE ONLY. How to use This product was developed for professional use only and should not, therefore, be used at home. Mix L'Oréal Professionnel Inoa Permanent Hair Dye 4.15 Ash Mahogany Brown 60g with the suitable L'Or and eacute;al Professionnel Inoa ODS Oxydant Riche developer depending on the hair condition and preferred technique. Use a ratio of 1:1. Apply to the hair adjusting the technique to the desired results and access developing time accordingly. After developing, gently emulsify the product to remove the color from the scalp. Then rinse thoroughly until the water runs clear. Lastly, shampoo twice with L'Or and eacute;al and nbsp;Professionnel S and eacute;rie Expert Metal Detox Shampoo or and nbsp;L'Or and eacute;al and nbsp;Professionnel Inoa Post Shampoo.