Gel-like: transparent or translucent gel or tape-like, commonly used in nasal patches, eye corner patches, etc. The main component is polyvinyl alcohol, and a certain amount of humectant and wetting agent are added as plasticizers. It has moisturizing and blackhead removal functions, or contains active ingredients for anti-wrinkle around the eyes.
Soft film powder: mainly powder, usually containing alginate and other polymers, containing calcium or magnesium compounds (such as talc), and the rest are filled powders. After being coated in a uniform slurry with water, it will gradually form a film (seaweed The combination of sodium and magnesium is insoluble) and can be removed. There is a sense of shrinkage when the water evaporates.
Hard film powder: The main component is raw gypsum, which will undergo hydration after adding water, and can be completely peeled off after heating and curing. Sometimes adding menthol, peppermint oil, borneol and other components can eliminate the heat sensation.