I love this stuff! I have a mixing liquid from Mehnron and it's good, but not as good as Iglot. The first item I brought back to life after getting this, was a cake, eyeliner in a little jar. It was rock hard but after putting 4 or 5 drops of this mixing medium into the jar, I was able to start mixing the eyeliner and eventually it hot soft again. My eyeliner was a limited edition, egg plant shade with a little shimmer in it and I couldnt replace it. This mixing liquid saved my eye liner. You can use a drop of this in a powder eye shadow to make it a wet eye shadow. Doing so, makes the eye shadow appear metallic if you're already starting with a shimmery shade. The bottle is only about 3.5 inches tall, its glass with a glass dropper. It will save your dried up cosmetics and make applying dry cosmetics, fun! I haven't used it yet in a mascara tube but I'm planning on doing so. I have a few mascaras that dried up but still have plenty of product in the tube.