Let's start with a number that should stop you mid-scroll: twenty years. That's how long it's been since Sephora put a hair extension brand on its shelves. Two decades of skincare drops, fragrance launches, and a thousand different serums promising to fix your face, and not a single braiding hair bundle in sight, until now. Ruka Hair, a Black-owned biotech beauty brand out of London, just broke that streak. And it didn't sneak in through some quiet, forgettable soft-launch ei