CHEONGDAM STYLE FOREST BLACK CHANGE SHAMPOO (Brown) Semi Permanent Hair Color Korean Hair Darkening Grey Coverage Volume Shampoo, Peptide Ceramide Hyaluronic Acid Black Food Paraben Free 6.7oz

I have used the product only a few times, and it has caused adverse skin irritation. I believe the chemicals are too strong for my skin, and potential buyers should be aware and exercise caution when using this product. Take warning or you may regret it.

This works great! I use it in between my monthly hair color so i can touch up the roots (about 2 weeks after). Recommend painting it on your hair as if you’re coloring your hair and leave it on for at least 30 min before washing it out.

I strongly recommend it! It works for me. When I first used it, I doubted that the color would change, but when I trusted the product and continued to use it, I was able to see it turning remarkably brown from the fourth day. Follow the instructions on the label. You don't have to stay longer than instructed. It works gradually, not immediately. It is recommended that you leave on for 5 minutes while you do other things and then rinse. Super easy!

It doesn’t work. Stained your hands and towels despite the claim that it would only do lightly. Color starts to come off few days after you stopped the 5-day cycle.

So this does work to color those grays but I’m not sure it should be called a shampoo—seems more like hair dye and smells like an otc brand of root touch up dye I’ve used. The pump is split in two sides when you use it—there’s the dark color dye and then the other half spits out a white colored activator or something and instructions say to mix the 2 together before applying—sounds an awful lot like your standard root touch-up or box of dye. I’m not an expert and i do have to admit that it worked to hide my grays quickly, unlike another brand of color shampoo that took months to make my white hairs a rust color, but i think next time I’ll just stick to my OTC root touch up for the price.