Garnier Olia permanent hair dye is a 60% oil-powered formula, with natural flower oils and ammonia free for a pleasant scent. Olia's Oil Delivery System Technology uses oils to propel the colour deep into the hair fibre to give you maximum colour performance and visibly improve hair quality. The 1st permanent home hair colour powered by oil, not ammonia, to reduce damage. Garnier Olia shade 4.0, "Dark Brown," is a natural brown shade that is one shade lighter than Olia shade 3.0, "Darkest Brown." Olia’s 60% oil blend formula with natural flower oils & no ammonia gives you brilliant colour, whilst also creating visibly healthier hair with 100% grey coverage. Oil-powered hair colour for a natural brown. When concentrated at the heart of the Olia permanent brown hair dye formula, oil maximises the brown hair colour result. It provides 100% gray coverage and is best for anyone with natural hair between light brown and black. With Olia, hair is hydrated, silky and shiny. Shop for garnier olia hair dye online at Target. https://www.cvs.com/shop/garnier-olia-permanent-hair-color-prodid-1013389 Free shipping on orders of $35+ and save 5% every day with your Target RedCard. https://www.garnierusa.com/about-our-brands/hair-color/olia Review: Garnier Olia Brown 5.0 Permanent Hair Dye - YouTube Our at home hair dye visibly improves the quality of hair, for better shine and 35% smoother hair… Garnier Olia Ammonia Free Permanent Hair Color, 100 Percent Gray Coverage (Packaging May Vary), 3.0 Darkest Brown Hair Dye, Pack of 1 Hair is 35% smoother with 3x more shine*. If you prefer a lighter color that still reflects naturally, try shade 5.0, "Medium Natural Brown."