Cosmetics Formulation Development

1. น้ำมันหอมระเหย peppermint How much should I put in the lip balm? 2. Maximum size น้ำมันหอมระเหย peppermint at put in lip balm Shouldn't be more than that?

Hello, the maximum rate by the FDA is not specified, but generally it is not more than 5% for normal skin. And the team does not recommend using more than 2.5% for sensitive areas such as lips.

thank you