Substandard chemical variants and structurally altered chains can skew your investigative metrics
10.1016/s0041-008x(03)00240-0 28 Elsayed ElgarawanyG.AbdouA
Pros contains vitamin E to boost vitamin Cs effectiveness contains hydrating and soothing ingredients fragrance- and essential oil-free Cons contains alcohol, which can be drying and cause irritation Best vitamin C serum for sensitive skin Price: $$ Vitamin C concentration: 15% L-ascorbic acid Standout ingredients: ferulic acid, vitamin E, hyaluronic acid, pumpkin ferment, pomegranate extract, chronocyclin, grape juice extract, Indian gooseberry all skin types, including sensitive skin Skin type: Product size: 30-mL bottle We love this brand for sensitive skin because its products are usually without irritating essential oils, silicones, chemical sunscreens, drying alcohols, fragrances, and dyes
How long that 10mg lasts depends on the research design and once reconstituted, the material has a finite stable window