9/3/2023 0 Comments Ph of timeless vitamin c serum![]() ![]() There are also some fruit extracts are very high in ascorbic acid. A lot of people do find ascorbic acid really irritating! I’d recommend starting at under 10% and working up, or even just staying there or going down if your skin is sensitive to it. There are definitely diminishing returns with too much ascorbic acid! Higher percentages are going to be more irritating, and like for many skincare actives, low percentages are underrated.Ī lot of studies have been done with 3% and 5% ascorbic acid, so you don’t necessarily need to go very high to see benefits. ![]() Studies have tested ascorbic acid at between 3–25%. Ascorbic acid product basics Concentration It’s worth noting that in some of these studies, people who didn’t get as much vitamin C in their diet had more improvements in their skin, so try to eat a balanced diet as well, it’s good for your skin. Vitamin C’s also been shown to reduce some of the changes that infrared radiation can cause in skin, and there’s evidence that it can also protect against ozone and diesel engine exhaust, two pollutants you’ll find in urban areas. There were similar results when vitamin C was used with ferulic acid and phloretin on human skin. In one of the classic vitamin C studies done on pig skin, twice as much UV was needed to turn skin red after it was treated with 15% ascorbic acid, adding 1% vitamin E doubled that, and adding 0.5% ferulic acid doubled that again – this combo gave a total of 8 times the UV protection. Related post: Antioxidants in Skincare: What Do They Do? Antioxidants can soak up this damage… provided they can get into your skin, where the free radicals form. The short version: free radicals are really reactive substances that smash into lots of different parts of your skin and damage it, like a bull in a china shop. One of the big reasons UV is bad for skin is because it produces free radicals. It doesn’t stop UV like sunscreen, but it does act as an antioxidant that mops up the damage UV does inside your skin. Vitamin C can also protect skin from the sun. Related post: What are the skin lightening alternatives to hydroquinone? Sun protection The exact way it does this is still isn’t entirely confirmed, but so far it looks like it interferes with the enzyme tyrosinase and stops it from doing its job. Reducing pigmentĮxcess pigment is the other big skin concern that vitamin C can help with, for example with sunspots, or post acne marks (post-inflammatory hyperpigmentation or PIH) or melasma.Īscorbic acid interferes with the production of melanin, the brown pigment in skin. It’s been found to reduce downtime, and may also be able to boost pigment reduction. Vitamin C is involved in making collagen and crosslinking it, so it forms a nice firm network – some of the enzymes that make collagen (prolyl and lysyl hydroxylase) need vitamin C to work.Īscorbic acid might also be able to block the action of matrix metalloproteinase 1 (MMP-1), an enzyme that breaks down collagen in your skin.Īscorbic acid can also help with wound healing, such as after fractional laser treatment. The most exciting effect that L-ascorbic acid has had in studies is that it can increase collagen in the skin. ![]() The reality is: pure L-ascorbic acid is the cheapest version you can buy, so all ascorbic acid you get in skincare and supplements is going to be L ascorbic acid.) Boosting collagen (A side note: sometimes you’ll see people say it has to be L-ascorbic acid, not just regular ascorbic acid. It’s actual vitamin C, the stuff you find in oranges and in supplements. Ascorbic acid is the best studied and the most common type of vitamin C ingredient on the market. It’s one of the best studied skincare ingredients! In the Grand Hierarchy of Skincare Active Ingredient Categories, it’s right below retinoids.Īnd specifically, it’s ascorbic acid that we’re talking about. Well, it’s because of the amount of evidence behind it. Why is everyone so obsessed with vitamin C in skincare? 9 Microneedle patches What does vitamin C do? ![]()
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