What is sodium ascorbyl phosphate?
Vitamin C in its pure form, ascorbic acid, is a powerful antioxidant, but it breaks down quickly when exposed to water, air and light, and its low pH can sting sensitive skin. Sodium ascorbyl phosphate is a vitamin C derivative: a salt of vitamin C bonded to a phosphate group. It is far more stable in water-based formulas and gentler on skin.
What it does for skin
Like vitamin C, sodium ascorbyl phosphate helps skin look brighter and more even, and its antioxidant activity helps defend skin against free radicals from UV and pollution. Vitamin C also plays a role in skin’s own collagen production, so it supports a firmer-looking complexion as part of a complete routine.
How it works
Once it is absorbed into skin, sodium ascorbyl phosphate is converted by skin enzymes into active vitamin C. That gradual release means a steady supply of antioxidant support without the instability of pure ascorbic acid.
Oxidative stress is one of the key drivers of visible skin aging, alongside UV exposure and glycation. Antioxidants like vitamin C help with the first, sunscreen helps protect against UV, and Supplamine® helps interrupt glycation.
Why MEG 21 uses it
In Bright & Firm Eye Treatment, vitamin C works with niacinamide and licorice root extract to help brighten the look of the under-eye area, while caffeine refreshes and peptides and bakuchiol help smooth. Vitamin E in the same formula is a classic antioxidant partner for vitamin C.
How to use it in your routine
Apply Bright & Firm Eye Treatment around the eyes after cleansing and serum. Antioxidants like vitamin C work best as part of a morning routine finished with sunscreen: they help with oxidative stress, and Daily Mineral Shield SPF 30 helps protect against UV. Sodium ascorbyl phosphate is gentle enough to use every day.
Who is it for?
Sodium ascorbyl phosphate suits people who want vitamin C’s brightening and antioxidant support with a gentler feel, including those with sensitive skin or skin that finds pure vitamin C too strong.
