Kelly Reid, a board-certified dermatologist at West Lake Dermatology in Austin, TX recommends sticking with lower percentages (just like you would with retinol products) or seeking out serums made with sodium ascorbyl, one of the gentler forms of the antioxidant
Itll never happen
In an animal model of diabetes, maqui berry extract reduced intestinal absorption of glucose (Hidalgo 2014)
NAD+ is not a peptide, the phrase NAD peptide is a marketing label rather than a molecule, and the two therapies are built for different jobs: NAD+ as a systemic energy and repair foundation, peptides as targeted signals for repair, skin quality, and recovery
Change history 28 May 2026 A Correction to this paper has been published: References Woodby B, Penta K, Pecorelli A, Lila MA, Valacchi G
Vaccination has been very successful at reducing the prevalence of this disease