2, look at the solvent state, hyaluronic acid has a small molecular weight, is water-based, feels very delicate when rubbed, and slowly becomes clean and disappears after rubbing several times; However, Ogilvy is obviously too large and jelly-like, and it is difficult to disappear quickly after solidification. Silica gel is an oil agent, which feels oily when rubbed.
3, look at the size of the needle, the molecular weight of silicone oil is very large, so its needle is very thick, if the needle is too thin, silicone oil can not be pushed out; Hyaluronic acid has a small molecular weight, so the needle used is also very small.
4, sterile sealed packaging, legal hyaluronic acid, are directly put into the syringe, sealed with sterile packaging, as long as you directly unpack the package before use, and then put on the needle to be punched, you can punch, and it will never be packed separately.