The brainchild of a collective of creatives, hairstylists, chemists and formula enthusiasts, amika's mantra is "all hair is welcome". Staying true to their word, the Blockade Heat Defense Serum provides impressive heat protection, while somehow being simultaneously light enough for finer hair types and hydrating enough for thicker ones. We all know that when things start to steam up, protection is essential. Perfect for all hair types, especially those in need of heat protection and moisture, th