American beauty founders are warning prices are likely to go up as the global skincare and cosmetics industry comes to terms with Donald Trump's new tariff regime. And while US based consumers are wondering whether or not to stockpile their favourite products, TikTok videos from Chinese creators revealing industry secrets about which luxury brands they manufacture are flooding their algorithms. US consumers have raised particular concern over the tariffs threatening to undermine the affordability of much-loved K-beauty products, which have been propelled to cult status among savvy skincare consumers looking for lower priced items. In a very busy marketplace, K-beauty…