Hello
1. Is this formula complete? Is there anything else to fix for the morning and evening use serum
The formula needs to be cut
Phospholipid because it is soluble in formulations with Both water and oil in the formula only, other parts have no problem.
2. Users don't want to wait 15 minutes between this serum and The ordinary
ascorbic acid in powder form, users want to mix serum formula. This is mixed with The ordinary
ascorbic acid powder and used in one time. Can this be done?
Please test as follows. Let's mix this formula with The ordinary
ascorbic acid at the rate you actually want to use, then
วัดค่า pH of the formula. If the pH is higher than 3.5, this is not possible. but if it is lower than 3.5, it can do as you have stated
3. Has the texture been improved? (Light, easy to spread, not heavy on the skin, the color of the serum looks beautiful. etc.)
The formula will be yellow from
Licochalcone A , the other parts have no problem. For greasy or heavy skin You must be a tester. Because it is a matter of individual feelings.