I love highlighting my eyes. I mostly prefer gel and liquid liners over kohl for the finish they give. This chamber smooth on eyeliner claims to be waterproof and give a good finish which stays longer. It comes in a transparent tube with a black screw type cap which holds the applicator. The brush of the applicator is thin and soft. It does its job perfectly by giving a good precised line. The product is travel friendly and it is also available at an affordable price. The eyeliner is of gel type. It is neither too thick nor too runny. One factor I like about this is, it dries quickly. As the brush is soft and thin, you could draw a thin line and a thick line if you prefer. Just dip the brush in the tube and draw your lines. This product is available in four shades. They are black, purple, blue and green. I mostly prefer black shade over others as it is universal. The shades are pigmented well and gives a perfect winged look. It does not have any shimmer and gives a matte finish. The black color is intense and this is the reason why I prefer liquid liners over a kohl. You may need some practice in getting used to the brush. It stay on upper eyelids for longer hours. As I don't use liquid eyeliner on my lower eyelids, I am not sure how it works there. The product is not completely waterproof. The product goes off when you wash your face. Overall, a good product which gives intense color for an affordable price. I hope the product works on its waterproof. If you love matte finish and wish to try different shades like blue, green and purple, then this product is for you.