Hello, according to the formula that members have informed. What you get will not be a serum. but will be liquid which may not be suitable for use on the skin (Inconvenient to use) for
สารกันเสีย if used
น้ำกุหลาบ instead of
น้ำกลั่น In the formula, it doesn't have to be added.
สารกันเสีย because
น้ำกุหลาบ will contain
สารกันเสีย Added from the manufacturer. The formula can be put.
Vitamin E but because
Vitamin E is oil, which must be dissolved in oil only. Addition to water base It is necessary to coordinate the formula. Introducing members Study the basics of mixing at
มือใหม่กรุณาอ่านที่นี่ to know how to mix basics. When the formula contains both parts of water and part of the oil