Shengyuan products are safe and effective for external use and are well recognized by everyone. It was written by a famous doctor, and the effect is still very good.
Although the product is good, the key is the people who use it. There are not so many requirements and stresses for personal use, but opening a shop is different. According to my observation, most people have never used the second or third effect of the product. A thick layer covers the skin and hardly absorbs it. The effect is definitely not much better.
If you have a good experience, you can communicate more.