There is no substitution for chamber eyeliner in any brands. It is darker than black. It stays longer. Waterproof and smudge proof. It is a bit expensive but worth buying it as it highlights your eyes and make it so attractive. We can find great difference using it. It won’t damages your skin. The person wearing lens also can use chamber eyeliner. I am using it for past 4 years. It is available in all malls, cosmetic outlets and in online.The only disadvantage is you have remove by using oil or makeup remover.