(TrendHunter.com) The Haus Laboratories PhD Hybrid Lip Oil Stain is a new product with self-adjusting pigments, so that a custom color can be created for each individual based on their own pH. The lightweight, high-... (TrendHunter.com) The Haus Laboratories PhD Hybrid Lip Oil Stain is a new product with self-adjusting pigments, so that a custom color can be created for each individual based on their own pH. The lightweight, high-...