Pay in 4 interest-free payments of $7.40 Learn more
Ships within 48 hours · Estimated delivery Aug 27 - Sep 1
NAC appears to work through several overlapping mechanisms, including breaking disulfide bonds in mucus, influencing inflammatory signaling, supporting redox balance, and affecting glutamate activity in the brain.31 That helps explain why NAC has been studied across such different areas of health
Research indicates it can cross the blood-brain barrier freely and survive intestinal passage with some retained activity
Devon Abelman, contributor More to know Types of vitamin C: 3-O-ethyl ascorbic acid, ascorbic acid (percentages undisclosed) Other key ingredients: 63% Hippophae rhamnoides water, 5% niacinamide, 2% tranexamic acid Fragrance-free: yes Best for Advanced Users: CosRx Advanced The Vitamin C 23 Why it's worth it: If youre not new to the vitamin C gamesay, youre ready to graduate from CosRxs lower-dose The Vitamin C 13 SerumCosRxs The Vitamin C 23 Serum turns things up with a potent 23% concentration of L-ascorbic acid (the pure, biologically active form of vitamin Cwhile ascorbic acid is the broader chemical name youll see on ingredient lists, it typically refers to this same L-form in skin care)
Deficiencies are linked to symptoms like brain fog, irritability, and mild depression
US$ 25.01
US$ 24.20
US$ 20.81
US$ 29.11
US$ 22.40
US$ 24.55
US$ 25.33
US$ 27.65
