According to the brand, however, the formula should remain stable and effective for up to six months after it’s opened. Skin type: all | Key ingredients: ferulic acid, vitamin E, vitamin C NBC ...
“Vitamin C, scientifically known as ascorbic acid, is a six-carbon lactone molecule with the chemical formula C6H8O6. Ascorbic acid is freely soluble in water, and forms a clear, colourless-to ...
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