Why is my serum orange?

Why is my serum orange?

When you open the bottle regularly, vitamin C tends to oxidize and change color after being exposed to air. Keep in mind that heat and light exposure also speed up the oxidation reaction. Typically, serums start as clear and can oxidize to yellow, orange, and, in extreme cases, even muddy brown.

What color should a vitamin C serum be?

Depending on the formulation, Vitamin C is typically clear or light yellow in color. Vitamin C (L-Ascorbic Acid) is typically unstable in water and oxidizes over time.

Why is my vitamin C turning my face orange?

As most of you may know, vitamin C in the form of ascorbic acid oxidises easily to dehydroascorbic acid, which has an orange-brown colour. It does this when it’s stored in water, as well as on your skin. Oxygen and light exposure will speed up the oxidation reaction.