It's a long question, let me divide it into sections. Let's go
1. About the Repair Activator - can be mixed with The existing serum (I think I'll mix it with Sulwhasoo snowwise because the texture is so light) by using a drop and spreading it. Can I mix it together and apply it like this? - I see on the website it is recommended to use at 10-15%. I want to know if using more than this will be dangerous, how many % or more will be harmful to the face?
2. About Stabilized Vitamin C (Natural-C Glycol™) Serum - This is a ready-to-use serum that can be bought to be applied or mixed with something else. Again - mix with
Repair Activator , do you have any information? You can recommend it again. Thank you