I purchased this product for the first time only recently, after doing some online research. I was looking for a healthy alternative to a brand that I used for almost a decade. I have about 20% gray hair, more so on my temples, and my natural hair color is dark brown. The Medium Brown 4N by Tints of Nature seemed to be the best match, so I gave it a try. I had nothing to lose but gray hair.
When I got the package, I read everything on the box and in the instructions, just to make sure I'm not missing any warning, as we all know, these things always come with all sorts of warnings. Though, I did not do the allergy test 48 hrs ahead as I never had any allergy issues before, even with brands that are known to be less safe. And I did not regret it, because I had no issues at all. It's been now 5 days since I used it and I am completely fine.
As for the product, I instantly liked it. The color smells very nice, it does not have the typical chemical/toxic smell to it, and I did not even have to turn on the fan in my bathroom. The preparation time is just as with any other brand, as there are two bottles that need to be mixed well, and you are good to start with your journey. The mixed color paste is just thick enough that it does not drip from your hair, and still, you can run your comb through your hair if you need to. I also like that it is made of the certified organic ingredients, and that it has the least amount of the toxic ingredients, which they have to use in order for it to fully cover your gray hair. Be aware that this is not a 100% non-toxic/organic product, however, it is the least toxic permanent hair color that I could find on the market.
In addition, it is made in the UK, and to my knowledge, they need to comply with the much stricter EU safety standards, unlike US manufacturers. That fact alone gives me a piece of mind, as FDA has not changed their laws about the beauty products and their safety since the 70s.
And the most important thing, the hair color came out beautifully. It has a warm tone of the dark brown shade, and it fully covered all my grays. My hair looks shiny and natural. The gray portion got a very slight tint of a dark brown with golden undertones, but they are still very well covered. No one would be able to tell that those were gray hairs at some point. The previous brand that I used to use would give me a very dark brown with black undertone, and it was a bit too dark. I love this product, it is the safest I could find, its packaging is made out of recycled materials, and they use organic ingredients, among other things.
The only thing I don't like is its price. It is about double of what other similar products cost and I have not seen it in any store in CA. Which means, there is shipping time to include in your wait, so I am about to order myself another box.
I highly recommend this brand, and this is after using hair colors on and off for about past 20 years. I started experimenting in my teens, and by now I consider myself an amateur-pro, if there is such a thing.