I love this hair treatment and always have some on hand as part of my regular haircare rotation. Packaging is great for travel too, though for normal home use, I wish they would package this in a more eco-friendly manner. I usually pour and mix each vial into a second, airtight container, because each mix is enough for about 1.5 treatments for me, so I save some for the next use. Have been using this for a couple years now and it's made a difference in my hair health.