Of course I use day or night cream over serum. What do PC,TC, EL stand for?++
I like the Vichy Liftactiv one in dropper bottle and Paula’s Choice C15 +++
Vitamin C (ascorbic acid specifically) by far, because I can see it improving my skin +
I rotate my actives... I find this keeps my skin in better balance. So ++
It up to each brand to decide what they tell their customers. There’s no +++
Occlusives don't moisturize but seal in other products - r/o
For vitamin c I really like cellex c. Not cheap but it doesn't irritate my skin like ++
It’s not really a vitamin C (as in, ascorbic acid), but instead a derivative form +++
Lots over the last 20 years, from Cellex-C to The Ordinary, so +++
PC C15 has a distinct smell (as it has both ascorbic acid and ferulic acid). Vichy Liftactiv +++