![]() ![]() Then it should be followed up with a moisturizer. Vitamin C should be used after cleansing and toning the face. However, if you reach out the company’s customer service they are usually very willing to share those details.įAQs ABOUT PICKING THE RIGHT VITAMIN C SERUM In what order should you apply Vitamin C serum in your skincare routine? NOTE: pH information isn’t usually included on product packaging. On the other hand, if you have sensitive skin, then you want a product that is close to the skin’s normal pH (in the 5 to 6 range).īy the way, if you have very delicate skin, this list of the top vitamin C serums for sensitive skin is for you. However, if you have normal skin, you might be able to handle it. This is much lower than the average adult’s pH of 5.7. Some sources say a pH of 2 to 3 is best for optimal absorption. In order for the skin to absorb vitamin C, the serum needs to have a fairly low, acidic pH. This is better than the bottles with droppers because the dropper exposes the serum to the environment. In addition, some brands use a bottle with a built-in UV-protectant. Since vitamin C oxidizes easily when exposed to light and air, the ideal package should have these characteristics: carrier oils (like jojoba, grapeseed, olive, etc.).So, a good serum should include some hydrating and/or moisturizing ingredients. No matter which form of vitamin C you use, it can leave the skin feeling dry. If it smells sour or becomes discolored, it’s time to chuck it. And once you do start using it pay attention to the smell and color. So, read the ingredient details to know exactly what you’re getting.Īnd while we’re on the topic of stabilization, make sure there’s an expiration date on your serum. Most brands use both ferulic and vitamin E for the best results. Vitamin E (sometimes listed as tocopherol).So, when choosing a serum, make sure it has stabilizing ingredients like: ascorbic acid – vitamin C is very unstable and oxidizes easily when exposed to light and air ( source). For example, a 10% derivative might only yield you 3% ascorbic acid ( source). ![]() Instead, you expect the conversion value to be lower. ![]() Meaning that if a product has 5% of a derivative, it’s not converted to 5% ascorbic. Now, as for vitamin C derivatives, they are converted to ascorbic upon contact with the skin. So, if you have sensitive skin, then you want to be mindful about this and stick to lower concentrations of L-ascorbic acid (about 5%). However, as the concentration goes up, the serum can also be harsher on the skin. Some research indicates that a 10% concentration of vitamin C is necessary for us to see any improvements, while a 20% concentration provides the most absorption ( source). Overall, it’s best to stay away from anything in the 20% – 30% range because that’s way too much for delicate skin. Not only does this make product formulation easier, but it also gives the product a longer shelf life compared to products containing ascorbic acid.Ī 5% concentration of L-ascorbic acid is ideal for most people with sensitive skin (though some people can go as high as 10%).
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