Wow. I have never left a review on a hair dye (or pretty much anything, unless it's really good). This was the most horrific experience I've ever had dying my hair and I've done it for 20 years (yes, including mid 2000s terrible box dyes!). First of all - the Naturtint Bionased’s consistency was far from a gel. It was basically as runny as water, but super oily. As I applied it to my roots, it started running down my face and neck pretty much instantly. And oh my god did it stain! The stains were EVERYWHERE. My whole face is blue black (which isn't even supposed to be the formula for an ebony black shade!), so is my neck and of course my hairline. I also had a few dry spots near my scalp and those are jet black dots now. It also dripped on my hands and arms. And I had to stay over my sink for the whole waiting time because of the constant dripping. It also really wanted to run into my eyes. I was terrified. I didn't even wait the whole suggested time as it was so bad. I never got the stains out with literally anything. As dye is usually the most effective thing to remove dye, I tried that first and that only made it worse as the dye stained instantly. I also tried a pretty strong cleanser, wipes, alcohol, of course soap, clarifying and regular shampoo, exfoliator, scrubbing it hard... NOTHING WORKED. And as I was washing it out, firstly my hair was so freaking oily it was disgusting, but then it became crunchy and very damaged-feeling. My scalp was stinging like it had been bleached. I shampooed it 3 times, which is not something I would normally do. And as I was really scared for the health of my hair, I also did a bonding treatment and deep conditioner right after. Scrubbing the stains in the shower had absolutely no effect. I lost so much hair during the whole process!! This is absolutely horrible. I am furious and depressed at the same time as I have been working SO hard to get my hair to a healthier state and I was just looking for a more natural dye than I was previously using. And THIS is what happened. I would want to freaking sue this company. It's either a really bad batch of this product (and horrible quality control in this case) or it is actually this bad, in case it should not be sold to anyone! My hair is already super thin and fine and on the drier side because it's wavy. How can you claim this dye is natural in any way if this is the result? The permanent staining is a prime example of it not being natural. AT ALL. I hope someone reads this review before trying it. At least try it somewhere other than your scalp first to see if it acts similarly.

Everything was fine with the application but after my wet hair was in a towel a large clump fell out from my left side hairline. I have been regrowing it slowly for 2 years now! Use Herbatint instead. It is natural and usable for two applications.

This is the second time of using this product and both times I had a severe eye reaction - I think probably to the conditioner. After washing out the dye and applying the conditioner and then washing that out and drying my hair, I put my reading glasses on my head as I usually do. When I put them on for reading, I had severe irritation in my eyes, causing them to water and swell up for a period of more than 24 hours, in the first instance it lasted days. I used the product for a second time because I was not 100% sure the first time that it was the product that caused the reaction. I do not have allergies and I have never had a reaction like this before to any hair product (I dye my hair 5 or 6 times/year). I certainly would never buy naturtint products again.