A lightweight multi-purpose oil treatment that gives hair nutrients to fortify, elasticize, add shine, and stop frizz. Why It’s Special: Take (glass) action on your hair. This nutrient-rich amika Glass Action Hydrating Hair Oil is a product of many talents: treating, styling, + finishing hair to name a few. The elixir smooths + reduces frizz, Plus, it’s a great partner-in-crime to other styling products for added conditioning benefits. Fun fact: glass action hair oil has one of the highest concentrations of amika’s signature ingredient, sea buckthorn.