I am buying this eye liner using Amazon. I saw more benefits on that. For the following features are mentioned this product. Deeply c OK ncentrated black pigments for intense and dramatic lines with a closier finish. Resist, oil, sweat and water. Oil free formula holds highly concentrated pigments in clear face.smudge proof and water proof for 36 hours. Most intense line for lasting drama. Contact lens was safe. But I start to using it was not for 36 hours.it comes only 2 to 3 hours. It was only water proof on that cases pollution full places are ignores eye liner colour and causes shades and separate for all places under eye.it is full of only chemical it was not content any natural products. I start to use my eye has irritation and pain of eye lashes also.i was using contact lens but it was not suitable for eye. If duration of using eyes having an lens it causes some amount of tears on eyes. And eye retina starts to pain for applying maybelline eye liner.so please don’t use this product.