vitamin c serum on your lips Is it actually crazy if it works? , One of the few serums that don’t break me out is from @dr.altheaglobal . I read somewhere that Vitamin C can help reduce lip pigmentation, so I put it to Abature’s Vitamin C Anti‐Aging Lip Serum blends deeply hydrating Beta Glucan (5× more hydrating than hyaluronic acid) Vitamin C Lip Balm Benefits:
Description
A fellow named Clif- ford Irving tried to sell a book

2004 Jun;81(6):1578-84

In addition to Ca 2+ -dependent activation, an important regulatory process involves intramolecular autophosphorylation, which adjusts the activation threshold of specific CPKs and modulates their signaling output