It's on fire. Fake soap will turn black when burned, and it will burn up when burned for a long time; Authentic essential oil soap will only melt;
Look at that. Black chemical waste left after burning fake soap; Authentic soap looks like a melted candle, which not only keeps its original color, but also has the original image of round and clear vegetable oil;
Smell. Fake soap will give off a pungent smell when burned with fire; Authentic soap exudes a faint fragrance of plants and essential oils;
Touch. Fake soap will become sticky when burned, but real soap will become soft when heated.