I want to make a concentrated formula serum.
ลดริ้วรอย stimulate collagen production under the skin Smooth skin, reduce acne scars by using active substances, for example.
Perfect-C (
Ascorbyl Tetraisopalmitate ) Please tell the team what ingredients should be mixed to make the serum.
วิตามินซี and percentage of each ingredient please, thank you.
by breezeyommanut » Thu Aug 19, 2021 4:36 pm 
