First time poster.
Thanks to this site, I am finally ditching products that don't work, culling through choices, and trying to make smart(er) ones.
I am coming to the end of my moisturizers and serums. If you had to choose, would you replace serums with a Hyaluronic acid formulation, or a 20% vitamin C serum?
I am a 50-something woman who skin is in pretty good, youthful shape and I'd like to keep that going as long as possible.
Recommendations of specific products welcome too. TIA!