Blade Renew. This razor blade cleaner/sharpener keeps razor blades sharp, clean and long lasting. Makes every day shaving hassle free and safe. Special thermoplastic elastomer (TPE) material cleans the razor blade and maintains edges sharp and clean. This blade saver simply makes your blades last longer - saving you money. For best results, use after every shave. This works just like the far more expensive Razorpit Sharpener.