What is the difference between Fur Oil and Ingrown Concentrate? 🤔 Think of Fur Oil as a preventative daily moisturizer and Ingrown Concentrate as a targeting spot treatment. Want to use them together? No problem! We recommend first exfoliating with the finger mitt that comes with Ingrown Concentrate in the shower. Then, apply Ingrown Concentrate to any bumps or areas prone to redness. Finally, apply Fur Oil liberally wherever hair meets skin.