how long does vitamin c serum last reddit

Dermatologists weigh in on how long to wait in between applying each skin-care product in your routine. It was yellow and oxidized for the majority of the time that I was using it, and I don't ever remember it being so nice and transparent like my current OST C20. International Journal Of Cosmetic Science, 31(1), 41-46. doi:10.1111/j.1468-2494.2008.00479.x, 12 - Segall, A., & Moyano, M. (2008). You may want to use these after any thin pH dependent actives you might be using (like AHA or BHA toners), but it mostly depends on the consistency of the product. (which is currently how my vit is doing, right about 2 and a half months and still good, and I will be finishing up the bottle before it oxidizes. Be sure to also check your product’s expiration date. Sodium ascorbyl phosphate shows in vitro and in vivo efficacy in the prevention and treatment of acne vulgaris. 1 - Hwang, S., Oh, D., Lee, D., Kim, J., & Park, S. (2009). 5 years ago If you store it in fridge at all times and be good with keeping it open (when you use it) for as little time as possible, it can last 2-3 months. I'm too lazy to go look for a manufacturer date. (2003). Looking to replenish your stash with fresh products? Below are some rough time frames for common skin concerns. Split-face study of topical 23.8% L-ascorbic acid serum in treating photo-aged skin. Vitamin C will turn an orange or deep yellow once it starts to break down, so be sure to pay attention to the liquid itself the longer you keep it on your shelf. It can start having a noticeable impact on acne after 2-3 months.9-11. Journal Of Cutaneous Medicine And Surgery, 13(2), 74-81. doi:10.2310/7750.2008.07092. Facial serums are special because they are one of the only products that contain active vitamin C. It’s also been suggested that topical application of vitamin C is 20 times more effective compared to when it’s taken orally. Do you have an amazon link to the one you bought? DIY Vitamin C Serum | NOTE: Measure ingredients by weight, balance the pH, and add preservatives. by R. Motzell | November 10, 2020 R. Motzell | November 10, 2020 & comparison of new vs oxidized vitamin c (ascorbic acid only), Vitamin C chart made by /u/BlatantTomato (source post), Vitamin C Masterlist made by /u/Sophrosynia - (it's based on the chart above, but more extensive). Press question mark to learn the rest of the keyboard shortcuts, Mod | Hoojoo specialist | Neem Team Queen. Here’s how vitamin C serum can improve your skin. Topical L-Ascorbic Acid: Percutaneous Absorption Studies. SkinDeva actually surprised me too. There’s certainly no law against using vitamin C products in the evening, but you may get the most benefit from using them in the morning. I know that's a very sweeping, general, sort of question But, I want to try vitamin c but can't really justify the cost if I have to buy fresh every couple of weeks if that makes sense so am wondering roughly how long I could expect a bottle to last :). Many of them don't have a lot of research backing them up, but you can learn more about the different forms of vitamin C in the overviews below :). On my first bottle (I'm on my 2nd now), I was able to use it for 3 months while it was still a clear colour. Warning. You might be curious, how long does Vitamin C serum take to work? I haven't heard of that one so will look it up in the morning. Ordered on 6/11/15, shipped on 6/17/15, delivered on 6/22/15. How long did it take for you to finish the first bottle? Vitamin C Serum Alternatives I don't refrigerate either. How you use vitamin C is totally dependent on the product! I'm not seeing a prime version. Journal Of Investigative Dermatology, 125(4), 826-832. doi:10.1111/j.0022-202x.2005.23768.x, 7 - Maia Campos, P., Gonalves, G., & Gaspar, L. (2008). The paraben-free formula is suitable for dry, … If it has an odd or sour scent, your vitamin C serum should no longer be used. To protect the effectiveness of your vitamin C serum, store it away from direct sunlight and heat. Concentration of Vitamin C is a key ingredient for effectiveness. There are many different types of vitamin C and many different formulations, but a general guideline for routine order looks like: L-AA Serums - Water Based - These are pH dependent products that work best at a pH <3.5.8 Since they tend to have a thin consistency and are pH dependent, you should try to use them early on in your routine, ideally right after cleansing. Will also make a mental note to store vitamin c in the fridge! Since it launched in 2005, dermatologists and beauty editors alike have sworn that its formula—which features vitamin C, vitamin E, and ferulic acid—is the stuff skin dreams are made of. I use life extension vitamin c, and am on my second bottle and have never had it oxidize ever. I don't use Amazon Prime, but it usually arrives within a week and from what I know the company makes their serums to order. General redness: 2 weeks 2. A light yellow tinge is usually not considered to be oxidized. For example, Mad Hippie uses sodium ascorbyl phosphate in their C serum, which may have additional anti-acne benefits (I say "may" as the research is limited, but in my own use, I feel it's been the best form). Personally, I like it much better than the OST C20 (which was my first VitC). There is limited research showing that the different forms of vitamin c may provide different benefits. 3 months seems to the average life expectancy. This. (2001). I also sometimes decant some into a sample container and that usually lasts a week. There are many factors which come into play when looking at the time it will take for you to see a significant benefit from applying a vitamin C serum to your face. I keep the bottles in the fridge, and each week I decant a bit into a small brown glass dropper that I reused from some sample. I ordered a bottle of c20 from Jolse at the beginning of summer. Clinical, topographical and ultrastructural evaluation: double-blind study vs. placebo. Manufacture date is 5/6/15 and expiration date is 5/5/16. Thank you so much for helping out with the Vitamin C Research Thread!! Since these products tend to be thick, it makes sense to use them later on in your routine - either right before or right after moisturizer. I keep wanting to change to a serum that has folic acid and vitamin e, but hearing how everyone's oxidizes worries me... New comments cannot be posted and votes cannot be cast, More posts from the AsianBeauty community. Journal Of Pharmaceutical And Biomedical Analysis, 15(6), 795-801. doi:10.1016/s0731-7085(96)01904-8, 6 - Lin, F., Lin, J., Gupta, R., Tournas, J., Burch, J., & Angelica Selim, M. et al. Other serums with a more stablized form of Vitamin C will last longer. Lightens dark spots (hyperpigmentation) 1. This may not be an Asian product but I can say it's been amazing! I'm just about halfway through this bottle (trust me, I'm slapping this stuff on my face and scarred knee every night and it is still so full), and it looks like I'll actually finish this one by the time it oxidises to the point of no return. But one needs to know how to use Vitamin C serum to get those benefits. Use vitamin C serum before applying moisturizer It’s important to use your vitamin C serum at the right point in your skin-care routine. And my first bottle lasted forever (I inherited it, already open from my mother, god only know how long she'd had it lying around). This is when you should generally expect to see a positive difference in your skin - which isn't the same as your skin being exactly as you want it to be! I do keep them in the fridge. L-AA is a fantastic choice for vitamin C, but it can be a rather unstable ingredient that’s prone to breaking down when exposed to heat, light, and air.5 Fortunately there are ways to improve the stability of L-AA products including: Using products with airless pump packaging and opaque containers (you can also wrap aluminum foil around your container to block sunlight), Storing your L-AA product in a cool, dark place, Using anhydrous (water-free) formulas (although there isn't much research available on how well they penetrate the skin), Using products that also include ferulic acid 6. The ferulic makes it more stable than regular vitamin C alone. Everything Else (MAP, SAP, etc.) (which is currently how my vit is doing, right about 2 and a half months and still good, and I will be finishing up the bottle before it oxidizes. I store mine in the fridge when not in use. It takes time for products to work. The little dropper lasts all week in my bathroom, and the big bottle only sees light/air once a week and can last many months - maybe more, like I said, I've never seen it go bad. | Visit /r/DIYBeauty for more information. Thanks for your knowledge! While L-AA is likely your best bet if you're looking for a vitamin C product with effective antioxidant benefits,7, 8 it may be irritating for some due to its relatively low pH. Vitamin C is an antioxidant that may help with various skin concerns. It takes time for products to work. Comparatively, I didn't even get halfway through my OST before it was super bright orange =/. There are many different types of vitamin C - too many to list here! HOLIDAY SALE HAPPENING NOW. My answer will be at least a month, or even two. It lasts longer than two months: With a purge, you're going to see an improvement in the acne within six to eight weeks. I use OST C20. Casual Friday (Humor, Cringe, Selfies, B&As are allowed; General Chat), If you want to add information to the Masterlist, go. But if you're not keeping it in the fridge, then it's likely you are looking at a couple of weeks. Stability of vitamin C derivatives in solution and topical formulations. Journal Of The American Academy Of Dermatology, 34(1), 29-33. doi:10.1016/s0190-9622(96)90830-0, Don't spam your blog, your product, your anything, Press J to jump to the feed. I find the price of this serum relatively affordable considering the limited lifespan of the product. I only use a drop or two each morning, so it lasts me a really long time too. International Journal Of Cosmetic Science, 27(3), 171-176. doi:10.1111/j.1467-2494.2005.00263.x, 10 - Woolery-Lloyd, H., Baumann, L., & Ikeno, H. (2010). This combination provides advanced environmental protection from elements such as harmful ozone pollution and infrared radiation. I had a lot of dark spots from old acne and now spots have greatly reduced or diminished completely. What is the average shelf life for a topical vitamin C serum? I do store it in the refrigerator, so that also helps! STOCK UP AND SAVE. The vitamin C in this product remains effective for at least 72 hours after each application, giving you benefits that keep on working. I kept it in the fridge and was careful to close it tightly, not leave it open more then necessary and to not shake it. Good affordable ascorbic acid c serum (the "gold standard" c… Vitamin C serums are acidic, which means they slough away dead cells from the skins surface leaving it brighter and smoother. Part 2 Mine lasted 4 months before oxidizing AND 2 of those months were spent backpacking (AKA it was definitely not in the fridge). Promotes … Additionally, be sure to seal the container after each use to prevent oxidation. My current bottle is almost 3 months old and is still completely clear, but since it arrived on my doorstep 7 days after it was made, I know that it will probably last another month or so before it starts to oxidize. MAC Prep + Prime Skin Brightening Serum, I used this for about 16 months, loved it! Cody here with Montarbo Skincare. Skin Pharmacology And Physiology, 17(4), 200-206. doi:10.1159/000078824, 4 - Humbert, P., Haftek, M., Creidi, P., Lapiere, C., Nusgens, B., & Richard, A. et al. (1997). The oxidation also seems slower -- currently, I don't refrigerate mine but leave it in the bathroom cabinet in a 2nd floor apartment in the middle of a humid summer, and the colour is still almost clear even two months into the bottle. I'd say my skin has been generally smoother as well :) See our Holy Grail Vitamin C recommendations: Paula's Choice C15 Super Booster (15% L-AA), Garden of Wisdom Majik C Serum (15% L-AA), Skin Actives L-AA Serums (15% & 20% L-AA), Skinlex 20% L-Ascorbic Acid Serum (20% L-AA). If you want to use vitamin c on your body, I would suggest you find a body lotion with vitamin c, or you are going to go bankrupt. It helped me with acne scaring in terms of their healing time, it was faster. 3 - Raschke, T., Koop, U., Düsing, H., Filbry, A., Sauermann, K., & Jaspers, S. et al. Color is perfect and not oxidized. As the serum begins to age it starts to clear up, then begins with hints of yellowing, which is normal due to the Ferulic Acid, not the vitamin C. The serum … Report Inappropriate Content . Sodium L-ascorbyl-2-phosphate 5% lotion for the treatment of acne vulgaris: a randomized, double-blind, controlled trial. It is non-aqueous, which means it has no pH, which I was worried about for awhile but it seems to work well for me. Press question mark to learn the rest of the keyboard shortcuts. I got them in mid to late May, and they're still the same color they were then. Since SAP works best at a relatively neutral pH,12 this would be a good option for sensitive skin! Hyperpigmentation: 3-4 months 1. If you have sensitive skin, you may prefer to use a different form of vitamin C. SAP is a stable form of vitamin C and is an effective acne treatment. Featuring two super-powered forms of Vitamin C, this serum delivers instant brightness while reducing the appearance of dark spots and hyperpigmentation so your skin can go filter-free. Vitamin C serum: 3 to 6 months. With my first OST C20, I wasn't using it properly plus I didn't refrigerate it. There is a lot of variation depending on the formula, but Wong says it can be a few weeks to a few years. I've had it since beginning March. I think it helps that my fridge is VERY cold and I only use it 3-4 times a week (less opening). Ferulic Acid Stabilizes a Solution of Vitamins C and E and Doubles its Photoprotection of Skin. Dry/Sensitive | Mod | European | Patch test ALL the things! Inhibitory effect of magnesium l-ascorbyl-2-phosphate (VC-PMG) on melanogenesis in vitro and in vivo. That said I'm also generous with my usage because I'd rather "waste" it on myself than have it oxidize. Use masks on clean skin, then pat on the excess serum left behind, or lightly rinse your skin with water before moving on to your toner, serum, or moisturizer. Vitamin C is touted as one of the best anti-aging ingredients on the market and the key to maintaining a smooth, even, and glowy complexion. (2004). Until it turns amber, I'll continue to use it. I stored it in the refrigerator. It's better formulated, and application is far less sticky and tacky when I use it in my PM routine. (2005). But does it … I also use the NuFountain C20+Ferulic like /u/IsaTurk! I use It's Skins Power 10 Formula VC Effector with Vitamin C. It lasts me about 6 months before oxidizing. 0 Hearts Highlighted. Tinted products hide oxidation. do you mind if I ask for your thoughts about the product? I think with any L-AA vit c (poorly formulated or not) the fridge is a strong and quite necessary recommendation. Yellowing of serum can indicate oxidation and ineffectiveness. Received it clear 2 weeks later. An oil-based formula is your best bet if you’re not using it daily. About 2 months and half later, it's still clear and about 4/5 empty. The bottle has a little more than half left. This one might have had a higher amount because sometimes it would sting. I use C20 or C21.5 and they last about 2-3 months if I keep it in the fridge. I expect my bottle to last me 3 months. So how long will a vitamin C serum take to work? Comparison of clinical efficacies of sodium ascorbyl phosphate, retinol and their combination in acne treatment. It has recently started turning a light yellow tinge but still remains completely clear last week. Imo, it's totally worth it, even if it doesn't last. If you’re unsure of how long your vitamin C will last once open, ask an expert or look for the information on the packaging. Below are some rough time frames for common skin concerns. I purchased mine from RRS 2 months ago. Be very cautious to … Stratia C+C Serum (10% L-AA + 5% ascorbyl tetraisopalmitate), Making Cosmetics 20% L-AA in Silicone (20% L-AA), The Ordinary Vitamin C Suspension 23% (23% L-AA), The Inkey List 30% Vitamin C Suspension (30% L-AA), Ole Henriksen Truth Serum (unknown % of SAP and calcium ascorbate), DermaE Concentrated Vitamin C Serum (unknown % of SAP), Timeless Hyaluronic Acid Vitamin C with Matrixyl 3000 Serum (5% MAP), Silk Naturals Vitamin C Serums (3-5.5% MAP), The Ordinary Magnesium Ascorbyl Phosphate 10% (10% MAP), [Review] Skinceuticals C E Ferulic vs Dr. Brenner's 20% Vitamin C Serum by u/Skinnie00001, How do I know if my vitamin c serum has gone bad? “Think about vitamin C like a charm bracelet. Once your serum turns yellow, red, or brown, it has become oxidized and will no longer be effective. But after that it was too expensive to continue so I stopped. According to Joshua Zeichner, MD, a New York City-based dermatologist, vitamin C is pretty hard to keep on lock. While there have been some in vitro studies suggesting it may be a good treatment for hyperpigmentation,13 there aren’t many solid clinical trials for MAP. I ordered the Vitamin C + E Ferulic Acid serum from Timeless and after 6 weeks, the color turned yellow as in your photo. This is fab! Use vitamin C serums in the morning. Press J to jump to the feed. (1996). I just bought this serum! If your serum has changed to a orangey color (or variation of dark yellow to light brownish), it's done. This is my second bottle, and both times I've ordered it, the manufacture date was within the same week of ordering and it arrived 2 days later (Amazon Prime). Stability of vitamin C derivatives in topical formulations containing lipoic acid, vitamins A and E. International Journal Of Cosmetic Science, 30(6), 453-458. doi:10.1111/j.1468-2494.2008.00473.x, 13 - Kameyama, K., Sakai, C., Kondoh, S., Yonemoto, K., Nishiyama, S., & Tagawa, M. et al. I use OST Vit C 20.5 serum. That said, MAP is a stable derivative of vitamin C that works best at a pretty neutral pH (5.5 - 8),5 making it a good choice for sensitive skin. Experimental Dermatology, 12(3), 237-244. doi:10.1034/j.1600-0625.2003.00008.x, 5 -Austria, R., Semenzato, A., & Bettero, A. I started using it within the week that it arrived (it's my second bottle). I keep a SMALL bottle in my bathroom, the rest in the refrigerator. https://www.honestbrandreviews.com/reviews/timeless-skin-care-review To add onto this, I also use the same exact vitamin C. Mine was made in April 2015. 1. (finally~) It’s no coincidence that a great portion of beauty products, facial creams, and serums include vitamin C in their formulas. Best to give up on that particular product and use something else! I use OST C20, which is probably one of the more popular Vit Cs around here. I contacted the company and this is their response, “Please be advised that when freshly manufactured the 20% Vitamin C + E Ferulic Acid serum is cloudy and thick in appearance with slight yellowing. I use Nufountain C20+ Ferulic (not AB, made in the US). Skinceuticals Dupe DIY Vitamin C Tutorial, Timeless Hyaluronic Acid Vitamin C with Matrixyl 3000 Serum, The Ordinary Magnesium Ascorbyl Phosphate 10%, [Review] Skinceuticals C E Ferulic vs Dr. Brenner's 20% Vitamin C Serum. One of the water based C , Ferulic Acid +E serums I use never changed color when I left a dropper full in an open dish on my window sill for 30 hours. I think I started using the Belitae Vitamin C serum 2-3 months ago, 1-2 times a day. I should note that I highly recommend that you refrigerate your OST C20 (not sure about other Vit Cs). Skin Research And Technology, 14(3), 376-380. doi:10.1111/j.1600-0846.2008.00288.x, 8 - Pinnell, S., Yang, H., Omar, M., Riviere, N., DeBuys, H., & Walker, L. et al. I keep it in the refrigerator in its box and use it every single evening, with the exception of 4 evenings last week when I went on a mini vacation where I didn't bring it with me. :) Thank you! It was the OST C20 I was originally looking at so I will add that to my next haul now I know I won't have to replace it something daft like weekly. Topical Activity of Ascorbic Acid: From in vitro Optimization to in vivo Efficacy. - These products aren't as finicky as L-AA - they tend to be quite stable and generally work best at a relatively neutral pH range. And you have to keep at it as using only once in a while will not give you any results. I use the OST C20, and I've never had it oxidize. The serum does come with a colored bottle like all other Vitamin C serum does. 2 - Xu, T., Chen, J., Li, Y., Wu, Y., Luo, Y., Gao, X., & Chen, H. (2012). Thank you all (especially the album, very clever). Add this brightening serum to your routine for a glowy, even, copy-me complexion. Vitamin C serums can take 4-12 weeks to improve your skin. This is when you should generally expect to see a positive difference in your skin - which isn't the same as your skin being exactly as you want it to be! For most formulas, this usually happens after about 3 months at room temperature or 5 months with refrigeration, although the exact amount of time will vary between brands. Using it without considering one’s skin condition and other things mentioned earlier can cause more damage than good. How do I know if my vitamin c serum has gone bad? Clinical Efficacy of 25% l-Ascorbic Acid (C'ensil) in the Treatment of Melasma. Hydra-Pure Vitamin C Brightening Serum, used this for about 8 months, again same results but too expensive. HOW TO USE VITAMIN C SERUM TO GET THE BEST RESULTS FOR GLOWING SKIN!Hello love! From benefits to the formulation, here’s the science behind vitamin C serums and why not all are created equal. Journal Of Cosmetic Dermatology, 9(1), 22-27. doi:10.1111/j.1473-2165.2010.00480.x, 11 - Ruamrak, C., Lourith, N., & Natakankitkul, S. (2009). Tue Aug 22, 2006 4:24 pm : If you apply a C serum from head to toe, it will last you about one day!!! Main factors in determining how fast vitamin C will correct skin damage . The serum combines 15% pure vitamin C (L-ascorbic acid) with 1% vitamin E and 0.5% ferulic acid. Message 3 of 4 (244 Views) Reply. Here, we investigate the eternal question: Does each skin-care product need time to absorb? The original color of this serum was a slightly yellowish as the picture shown below. How Long Does Vitamin C Serum Last? We’ve rounded up a few of our favourites below. I also store it in a dark place, with the bottle covered in aluminum foil just in case! A place to discuss beauty brands, cosmetics, and skincare from Asia. Or does it mean that they have made a formula that stabilizes the C for at least that long? How long it takes L-AA to start having a noticeable impact depends on the concentration, overall formula of the product, what skin concern(s) you’re trying to tackle, and of course, your skin! I had the same doubts. It is the vitamin C serum. TL;DR: the hype is real. Journal Of Drugs In Dermatology : JDD, 11(1), 51-56. It is in a non-aqueous solution (no water) which is supposed to make it more stable (something about the ions in water bind to the vitamin c and make it oxidize?). There are quite a few types of vitamin C with different pros and cons for each - we’ve covered some of the most common types below! Does that mean the Vitamin C is not effective? Topical ascorbic acid on photoaged skin. If your skin got worse after starting a new product and STAYS worse, for longer than two months, it's a breakout. I use Paula's Choice C15, and I've never had it oxidize because I use it up within 2 months. Dermatologic Surgery, 27(2), 137-142. doi:10.1046/j.1524-4725.2001.00264.x, 9 - Klock, J., Ikeno, H., Ohmori, K., Nishikawa, T., Vollhardt, J., & Schehlmann, V. (2005). (finally~). In vitro antioxidant activity and in vivo efficacy of topical formulations containing vitamin C and its derivatives studied by non-invasive methods. I use sample sizes of Skinceuticals CEFerulic. As vitamin C serum oxidizes, it will change colors. It's still completely clear, which I didn't expect because it seems to oxidize pretty quickly for a lot of people. Vitamin C skin serum does not work for everyone, can cause cause allergic reactions in some and may include other ingredients that have no benefit or may be harsh on the skin. Let me put it this way: SkinCeuticals’ C E Ferulic isn't just a vitamin C serum. It is 12% and minimal ingredients (literally, it only has 3 ingredients: LAA, tea extract, butylene glycol). If you store it in fridge at all times and be good with keeping it open (when you use it) for as little time as possible, it can last 2-3 months. L-AA Anhydrous Suspensions - Water-Free - Anhydrous formulas improve stability, although there isn't much research available on how well they penetrate the skin. Love this stuff.

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