Roll on Bottle 5 Ml Blue Glass Essential Oils Set of 4 Roll-On Bottle Set (5ml, Blue) The set contains 4x 5ml roll-on bottle made of blue glass for longer shelf life of essential oils or essential oil blends. Perfect for applying and precisely dosing diluted essential oils and oil blends directly to the skin, whether as lip balm, emulsion, perfume, etc., for home and on the go. The classic cobalt blue protects your precious blends from light. Manufacturer: Casida $29.00 Custom wishlist OK Add to wishlist Qty: Add to cart Email a friend Roll-On Bottle Set (5ml, Blue) The set contains 4x 5ml roll-on bottle made of blue glass for longer shelf life of essential oils or essential oil blends. Perfect for applying and precisely dosing diluted essential oils and oil blends directly to the skin, whether as lip balm, emulsion, perfume, etc., for home and on the go. The classic cobalt blue protects your precious blends from light.