Fresh active vitamin c serum should be clear or slightly whitish, but not yellow or brown. You can pay anywhere from $25 to $150 an ounce for a vitamin C product, and even the expensive brands oxidize if they're made from L-ascorbic acid. 27 окт. 2017 г.
Does vitamin C serum have to be clear?
Color: Your serum should be white, clear, or a light champagne color. If the product is dark or cloudy in color, the serum may have oxidized and should be returned or gotten rid of. Smell: Vitamin C serums should have little to no odor. If it smells sour, it's no good.
What color should vitamin C serum be?
“Your vitamin C serum should be colorless or a light straw color; if it oxidizes, it becomes yellow or brown and is likely going to be less effective.” You can still use it if you want, but it probably won't do as much for your skin and, “very rarely, oxidized vitamin C products can even cause slight yellow ...
Why is my vitamin C serum clear?
Vitamin C is by way of association, often as is thought of as orange, but in reality, vitamin C dissolved into water is not orange at all. It's clear. As clear as water. Which in turn means, your Vitamin C serum should also be clear.
Should vitamin C serum be clear or yellow?
Typically serums start out as clear and can degrade to yellow, orange, and in extreme cases all the way down to muddy brown. L-ascorbic acid (aka Vitamin C) serums should last around 3-6 months before showing any signs of discoloration.
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