Cosmetics Formulation Development

Note that vitamin C and vitamin B3 should not be mixed in the same bottle.

1 If separate bottles are vitamin C and B3 , each bottle should be applied How far apart do you have to be to have good performance?

2. Or should not be applied overlapping each other?

Thank you.

hello

You can apply it continuously. It's okay.

Complexing between Niacinamide + ascorbic acid takes time. Applying over one another doesn't cause any problems.