Vitamin C Serum Blog
Evergreen guides on using vitamin C: concentrations, layering order, what it can and cannot fix, and how to tell when a serum has turned. For dated launches and price changes see news, and for product data see all serums.
Why Vitamin C Serums Are Starting to Add Carnosine and Other Anti-Glycation Actives
Carnosine, neohesperidin and similar actives are turning up next to vitamin C in 2026 reformulations. They target glycation, which is a different problem from the one vitamin C solves.
6 Oct 2026
Vitamin C Serum pH: Why It Decides Whether Your Serum Works
pH is the number brands rarely print and the one that decides whether L-ascorbic acid gets into your skin at all. Here is what it does, and why derivative serums do not need to be acidic.
19 Sept 2026
L-Ascorbic Acid vs Vitamin C Derivatives: Which Form Should You Pick?
L-ascorbic acid is the most researched form of vitamin C and the least stable. Derivatives are gentler and last longer but have to convert in the skin. Here is how the main forms compare.
17 Sept 2026