When Andrew Fitzsimons - celebrity hairstylist to A-listers like Khloé Kardashian and Megan Fox - calls a product a "non-negotiable," it's not just hype. Known for creating some of the most recognizable, high-gloss hair moments on some of the industry's biggest stars, Fitzsimons relies on products that perform under real pressure. One staple in his kit? The Daily Dose Clean Moisture Leave In Conditioner, a lightweight formula he calls "a non-negotiable in [his] hair routine with clients.