As you can see, the greatest climate change during the year comes between the summer and winter months. In places like Kahului, Maui, the decline in temperature is as much as 10 degrees Fahrenheitâdropping from an average temp of 79.2 in August to a chilly (for Hawaii) 68.9 average in January.
Vitamin C, in the form of L-ascorbic acid, has anti-inflammatory effects that act specifically on the blood vessels which can reduce redness and irritation of the skin. Vitamin C can also control the release of histamine, a chemical that dilates the blood vessels during an allergic reaction. Because it can reduce redness and prevent excess blood flow to the skin, vitamin C may be beneficial in controlling the swelling and redness associated with rosacea.
Besides vitamin C induced irritation, some people breakout from vitamin C products because of their base. Some C serums have silicones or other inactive ingredients (to help keep the vitamin C stable longer) that can be problematic for acne-prone or sensitive skin.sually your skin gets used to the treatment and this kind of irritation will subside. However, sometimes you have to downgrade to a less potent C serum to make it more tolerable. Others even experience allergic reactions, such as itchy red bumps, and cannot use vitamin C at all.