Activated charcoal, made from burned substances like coconut shells, has become popular for its various uses in health, beauty, and household applications due to its powerful adsorption properties. It effectively decontaminates the gastrointestinal tract, improves oral health, and can remove impurities from skin and hair. Though generally safe, it should be used cautiously and not within two hours of medications or vitamins, and any ingestion should be discussed with a medical professional.