My eyebrows are thick, long, and dense, giving a strong and bold impression, so I decided to try dyeing them myself. These days, many salons offer eyebrow dyeing separately, but since the cost isn't cheap, I chose to try it at home by myself. The product comes in two parts, 1st and 2nd solutions, and the 2nd is in a container form where you just put the 1st solution in and mix, which is convenient and nice! Each dose is individually packaged, so it's hygienic and easy to store. It includes 4 doses of the 1st solution, 4 doses of the 2nd, and 4 brushes, enough for 4 uses, costing about $5 each time, so I think it's cost-effective. I was worried the amount might not be enough since my eyebrows are dense and dark, but there was plenty left even after applying generously on both eyebrows, so no need for extra use. For those with less dense or thinner hair, two people could even share it. My skin is sensitive, and I use gentle skincare and cleansing products, so I was worried about irritation, redness, or stinging from the dye, but there was no stinging, redness, or irritation after dyeing. However, if you dye right after trimming your eyebrows, small wounds might get irritated or infected, so I think it's better to wait a few days after trimming before dyeing! I waited about 7-8 minutes after applying the dye, then wiped it off with tissue and washed my face. The dyeing came out natural. Depending on your density and thickness, you can adjust the time. After about 5 minutes, use the brush you applied the dye with to lightly wipe some dye off and check the color, then adjust the timing accordingly! When removing the dye, if you use wet wipes, the water and dye can run into your eyes, so it's better to wipe with tissue first, then wash your face to finish. Since there might be some skin irritation after dyeing, I recommend using gentle skincare products and applying them generously to finish. Thick and dark eyebrows have always been a concern, but this product completely solved my problem! I plan to repurchase after finishing it! I recommend this to anyone worried about dark eyebrows.