Scraping is a traditional Chinese medicine regimen. In the process of scraping, some media, such as scraping oil or essential oil, are usually applied to the body to protect the skin from being scratched by the scraping plate. But if there is no scraping oil, you can actually use other liquids instead, such as safflower oil or bone-strengthening water for treating traumatic injuries. Scraping oil is mainly used to lubricate the skin. Traditional scraping can also be replaced by water, but the lubricating effect of water is not as good as that of oil.