66 DelangheT.HuygheJ.LeeS.PriemD.Van CoillieS.GilbertB.et al (2021)
8: McGuire FP, Martinez R, Lenz A, Skinner L, Cushman DM
Ascorbic acid, another ingredient, provides additional skin benefits, such as anti-ageing, antioxidant, and anti-inflammatory properties, which can help to plump and even out the skin tone
PubMed: 26787572Clinical (RCT / meta-analysis) ref-9.Papi A, Di Stefano AF, Radicioni M Pharmacokinetics and Safety of Single and Multiple Doses of Oral N-Acetylcysteine in Healthy Chinese and Caucasian Volunteers: An Open-Label, Phase I Clinical Study