Duraline | Eyeliner sealant | Prolong Makeup Durability | Turn any Eyeshadow to Water Resistant Liquid Eyeliner | 9 ml/0.30 US FL OZ

I've bought this twice so far. I add it to mascara, my liquid lipsticks and my Inglot eyeliner pots, I use only black colors and it does fantastic. It STICKS it really does, I went on a museum date in the morning then had to do the brakes on my mom's car same day. This stuff makes your eyeliner stick so hard that it survives getting sweaty and greasy, granted, on the lips it doesn't survive as well cause no crap, no matter what no lipstick will survive greasy pizza and intimacy but you can kiss your man/woman without it smearing horribly. Making out is a whole different game but it survives depending on your lipstick too.

I use this to blend with my eyebrow pomade. I’ve purchased this product several times over the years from different vendors and this one is my favorite. This one blends with your makeup the smoothest, lasts longer, and is overall better quality than the others I’ve purchased. It does not feel oily at all once it dries and it is completely waterproof. It can withstand smudges.

This is actually a great product that goes a long way. It really does create a staying power for the liner. I apply only one drop to my eye liner cream and it helps stay all day. Does not irritate eyes.

I've been using this product for a long time and it works great

One drop magic for sure! Placed a drop in all my dry mascaras and gel eyeliner and they were brought back to life!

This is one of the most essential products in my professional kit. You can dilute almost anything with it. If you want to turn an eyeshadow into a liquid eyeliner, just add a drop — it becomes a long-lasting, waterproof liner instantly. If any product dries out, one drop brings it back to life like new. Absolutely a must-have for any makeup artist!

Great product! Used it on my gel eyeliner cake and made it usable. Dropped powder eyeshadow case, broken eyeshadow. Used a couple of drops and able to use powder eyeshadow again. No need to throw out! Love this stuff!

If you’re a makeup enthusiast who experiments with looks, has loose pigments, multiple liners, or wants to get more from your existing products, Duraline is a smart addition. It offers good value by extending the life and versatility of other products. On the other hand, if you rarely mix or transform products and just apply standard shadows daily, it may be more niche for you.