To use it, you simply blend a small amount of powder into another serum or lotion, and apply the mixture to your skin. To my surprise, it didn’t irritate the healing zits on my jaw or the small eczema spots around my eyes—it felt slightly tingly for a moment, but quickly subsided. Of course, a vitamin C serum is only as good as its ingredient list. What's worth buying from the brand everyone's talking about. Vitamin C That Has Oxidized in the Bottle An oxidized bottle of vitamin C (not only has the serum turned dark brown, but the rubber dropper has also started to dissolve). Keep it away from light and heat (you may even want to store it in the fridge) with the lid tightly closed, and throw it away as soon as it changes colour or smells "off.". Edit: New DE serum left, oxidized DE serum right. This time, the formula melted into my skin and the sticky texture quickly disappeared. The formula is not bad but I have a big reserve about it. That’s C-Firma’s proposed solution, too, and exactly what I was after in purchasing … An oxidized vitamin C serum (left) vs. a fresh vitamin C serum (right). These Vitamin C Serums Will Give You Glowy Skin, Instantly, This $6 Vitamin C Serum Gave Me Silky Smooth Skin in 3 Weeks, Editors Everywhere Are Obsessed With This Vitamin C Serum, So I Tried It, True Story: This Budget Vitamin C Serum Lightened My Dark Spots in Just 3 Weeks, This Vitamin C Serum Sold Out in Less Than 24 Hours and Now I See Why, I've Tried Hundreds of Serums—These Are the 20 Best, What Is Ferulic Acid? If you struggle with vitamin C turning colour on your skin—even when it's applied from a fresh, non-oxidized bottle—consider pairing it with a face oil. (For best results, each application should be mixed fresh.). After contact with light, heat and air, vitamin C eventually oxidizes and loses its potency. But if you'd rather not deal with that, opt for an L-ascorbic acid powder or vitamin C derivative instead. You'll know it when your serum changes colour, turning brown. C-Firma™ has a pH of 3.3. A quick Google search for a solve for these conditions points to one product in particular: vitamin C serum. Finally, sodium hyaluronate crosspolymer delivers a dose of hydration to plump the skin and diminish the appearance of fine lines even further. C-Firma™ has a reservoir effect, which means it will stay active on skin for up to 72 hours and cannot be washed or rubbed off. I had just gotten home from a long (socially distanced) weekend away involving countless cocktails and minimal sleep when I used this serum again. Edit2: Provide some photo samples to show that this brand's Vit C is normal at that color and get downvoted? Kelsey was MyDomaine's lifestyle news editor for over two years. I heard that vitamin C should only be used in winter because it can cause damage to the skin, like stains, when it is exposed to the sun. Contrary to what my medicine cabinet would suggest, I consider myself a skincare minimalist. You just need to be careful about oxidation! These ingredients help diminish the appearance of photo-damage and aging, in addition to clarifying the skin and enriching your overall complexion. A fresh bottle of vitamin C (notice the clear liquid with a thin consistency). Truth be told, vitamin C is an ideal ingredient to use in the summertime, because that's when our skin is exposed to the most UV light—and therefore the most free radicals. Should I open the serum or save it for the winter?— Patricia. However, anything from pale yellow to amber orange is normal. This should help create a bit of a barrier between the vitamin C and the oxygen in the air, which is responsible for it darkening your skin. Now, if you’re familiar with Vitamin C, especially Vitamin C in the form of L-Ascorbic Acid, you’d understand my consternation. Both alpha- and beta-hydroxy acids will accomplish this (although I prefer beta because they're strong but anti-inflammatory and non-photosensitizing). See our Disclosure for more information. Before you mix or layer these ingredients, read this. By midday, I could still feel a slight film on my skin, plus a subtle tightening sensation across my forehead and cheeks. And is there a way to stop it from happening in the first place? It spread evenly across my cheeks, jawline, and forehead, and absorbed quickly, leaving a slight residue behind. Contains 15 percent L-ascorbic acid—the most potent, proven form of vitamin C for antioxidant protection, brightening, fading of dark spots and boosting collagen production. Fortunately, the clever packaging helps to preserve every last drop—it’s housed in a completely opaque bottle with a secure twist-up lid to keep air out. Here's a recent question from my inbox: I bought the Timeless 20% C + E + Ferulic Acid Serum, but I have doubts about using it in hot weather. If you're a detail-oriented type of person, monitoring your L-ascorbic acid for changes and keeping it away from light, air and heat probably won't be an issue. L-ascorbic acid in solution is unstable and gets oxidized rapidly and turns orange. The same goes for retinoids, which are linked to phototoxicity, lipid peroxidation and DNA damage in UV light. The right way to layer these glow-getters. Finally, C-Firma has a pH of 3.3, which means it may change colors slightly during the course of its shelf life. The serum is orange probably from the pumpkin extract. All rights reserved. When I squirted out the C-Firma Day Serum, it came out a bright orange. You're not alone—this is a known side effect of the popular brightening and anti-aging ingredient! My sensitive skin demands that I play it safe when it comes to new products, but the fan-favorite formula boasts glowing reviews and promises to treat the exact concerns at the top of my list: dark spots, dullness, and fine lines. It's when it's a deep orange (almost red) that it should be avoided. Some of the best vitamin C derivatives include: While vitamin C derivatives are great for fighting free radicals and brightening, keep in mind that they're less proven than L-ascorbic acid in terms of increasing collagen. According to Dr. Zoe Diana Draelos in Dermatology Times, "vitamin C preparations can also discolour on the skin surface as they contact oxygen in the environment. Pro-vitamin B5 attracts and holds hydration in the skin, improving barrier function. But could the colour change actually be harming your skin? While I’d love to be the kind of person who can slather on serum after serum each day, my skin all but demands a cautious routine. While a vitamin C serum is essentially defined by L-ascorbic acid or THD ascorbate (a fat-soluable form of vitamin C) or a mixture either of those and ferulic acid (to help stabilize the formula), many don’t include the additional fruit enzymes. Is your routine as hydrating as it could be? You might want to test your mixture with pH strips, aiming for a pH between 3.0 and 3.5. So, there are definitely some skincare ingredients to consider avoiding when you are getting a lot of sun exposure, at least during the daytime (if not altogether). Ideally, look for L-ascorbic acid serums that also include ferulic acid and vitamin E, which will help stabilize the formula (not to mention double its photoprotection!). The bottom line? Far more worrisome than an unwanted tan, however, is that erythrulose may even age your skin. I quickly ran into a problem. You'll still get protection from free radicals, but you won't be exposed to strong sunlight that can oxidize the formula on your skin. All in all, C-Firma actually delivers on its promise of firmer, clearer skin, and in my experience, is less irritating than similar vitamin C serums on the market. I didn’t apply makeup over it and probably wouldn’t in the future just because I’m hesitant to layer too many products and risk a breakout. You'll know it when your serum changes colour, turning brown. The one vitamin you NEED in your skincare routine. Additionally, pure L-ascorbic acid is most effective when fresh, so use it up within six months and store it in the refrigerator to preserve its magic. Ich habe Shiseido angefragt, wann die Produkte auch in der Schweiz gelauncht werden, und die Antwort lautete: «Frühestens 2021» – wohl auch wegen der ganzen COVID-19 Pandemie. Cruelty-Free. Ahead, find my unfiltered three-day review of this hero product, including how it affected my sensitive skin, the results, and whether I think it’s worth the $80 price tag. Active ingredients: The brand’s Potent Antioxidant Complex, which consists of 15% L-Ascorbic Acid and Ferulic Acid, plus 1% Vitamin E. About the brand: Drunk Elephant is known for its effective, splurge-worthy products formulated without essential oils, drying alcohols, silicones, chemical sunscreens, fragrances, dyes, or sulfates. Your L-ascorbic acid serum as soon as you open it, within three months then a generous layer oil... Level of protection, considering strong products tend to irritate these sensitive and... And provoke even more breakouts the serum is only as good as its ingredient list frustrating the. To complement my sensitive skin types and is actually somewhat affordable, comparatively speaking?. Turning brown as I explained in drunk elephant vitamin c oxidized self-tanner tutorial, erythrulose and dihydroxyacetone DHA... Moisture and vitality, and more properly tell when vitamin C serum and noticed your skin darker... 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