How to Store Ascorbic Acid

Ascorbic acid, or ascorbate, is another name for vitamin C. Ascorbic acid helps your body grow and repair itself and is an essential nutrient. Unfortunately, it is also very delicate and breaks down rapidly when exposed to oxygen, heat, or sunlight. It’s impossible to prevent ascorbic acid from degrading, but you can slow the process down by storing it properly.


Method 1 of 2: Preserving Fresh Ascorbic Acid

How to Store Ascorbic Acid

Keep ascorbic in a sealed, opaque container. Ascorbic acid is very sensitive to oxygen and light. To make it last as long as possible, store it in an opaque container with a tight-fitting lid. Any ascorbic acid you purchase usually will come in one of these containers, so you won’t have to transfer it before storing it. However, move it into a more appropriate container if needed.

  • Avoid storing ascorbic acid in metal containers.
  • Ascorbic acid pills and powders, for instance, sometimes come in boxes or bags. They are fine in their original containers as long as you’re able to keep them sealed.
  • If you have a box of ascorbic acid pills, the pills will be sealed in foil packets. You can just leave them in the foil.

How to Store Ascorbic Acid

Store pills and powders in a cool, dark area. Try to find a spot that stays at a consistent temperature. For example, you might move the ascorbic acid to the back of a dark closet. You could also store it in the basement if your home has one. Keep it in a spot where it won’t be exposed to any sources of light.

  • Don’t store ascorbic acid in a bathroom or kitchen due to frequent temperature changes. For long-term storage, find a different spot.
  • If you use ascorbic acid in a place like a bathroom, remember to take it back out afterward. It’s a bit of a hassle, but it helps the ascorbic acid last longer.

How to Store Ascorbic Acid

Refrigerate liquid ascorbic acid to preserve it for longer. The cooler temperature helps preserve the ascorbic acid for longer. Make sure it’s in an opaque, sealed container before setting it on one of the shelves. The coolest storage spots are usually at the bottom and right next to the freezer.

  • Light and oxygen exposure can still cause ascorbic acid to degrade in the refrigerator. Leave the bottle sealed and the door closed as much as possible.

How to Store Ascorbic Acid

Throw out the ascorbic acid when it turns dark brown or red. Ascorbic acid is normally a pale yellow color. Most ascorbic acid powders and pills start off white, although you may still notice a slight tinge of yellow in them. As they age, they darken. At that point, the ascorbic acid is no longer potent, so it’s a good sign that you need to replace your supply.

  • Ascorbic acid is safe to use when it changes color, but it won’t have much of an effect. Oxygen converts the ascorbic acid to another form that your body can’t absorb.
  • In general, ascorbic acid powder lasts the longest. Pills can also last for years, too. Liquid ascorbic acid spoils the fastest and may not last beyond 5 to 6 months.
  • Even with proper storage, ascorbic acid loses its potency over time. It’s best when used right away. Try to use ascorbic acid within a few months after opening it.

Method 2 of 2: Selecting Stable Ascorbic Acid

How to Store Ascorbic Acid

Get ascorbic acid in pill and powder form for better preservation. Liquid ascorbic acid is fine, but it’s more difficult to store. If you’re taking a supplement, then you can use ascorbic acid pills. Ascorbic acid powder can also be taken as a supplement or applied to skin. They work just as well as pure liquid ascorbic acid despite not spoiling as quickly.

  • Some types of ascorbic acid are mixed in with ingredients like silicone to create a gel that is both long-lasting and easy to rub onto your skin.
  • Remember that ascorbic acid is vitamin C. If you buy vitamin C pills or powder, you are still getting ascorbic acid since they are the same thing.

How to Store Ascorbic Acid

Choose more stable forms of ascorbic acid for longer storage. L-ascorbic acid is very common, but it also spoils the fastest. To ensure ascorbic acid lasts longer, it is sometimes mixed with things like sodium or calcium. The additional ingredients make the acid more shelf-stable but less potent. L-ascorbic acid is 100% pure vitamin C, so it’s the easiest kind for your body to absorb.

  • For example, sodium ascorbate is less acidic than L-ascorbic acid. It’s often used in diet supplements and can be good if pure ascorbic acid upsets your stomach. Calcium ascorbate is a similar option.
  • There are other types, like magnesium ascorbate. You can also buy products with ascorbyl glucosamine, ascorbyl palmitate, and other alternatives.

How to Store Ascorbic Acid

Buy vitamin C serum if you use ascorbic acid for skincare. Vitamin C serum comes in a liquid or gel form. It is usually made up of a low amount of ascorbic acid, like 10% to 20%, mixed in with other ingredients. If you’re able to avoid ingredients like water, the serum will last longer. A serum is easy to dab onto your skin, so you don’t have to spend a lot of time with the bottle open.

  • To ensure serum lasts longer, look for varieties made from something like magnesium or sodium ascorbyl phosphate. It will be less potent than a serum made from 100% L-ascorbic acid, but it will last longer in storage.
  • Avoid serum made with water, since the oxygen in water causes ascorbic acid to break down quicker. Instead, try getting ascorbic acid powder and mixing it with water to create your own serum.

How to Store Ascorbic Acid

Purchase ascorbic acid in opaque bottles that will last longer. Choose ascorbic acid that comes in a dark bag or bottle. Plastic containers are better since they block out more light. If you’re getting bottled ascorbic acid, brown bottles block out more ultraviolet light than blue bottles. Avoid anything sold in a clear bottle, since clear glass lets in the most light.

  • If you happen to get a brand in the wrong type of container, transfer it to your own storage containers. For example, you might keep some old brown bottles on hand for storage.
  • Make sure the container is well-sealed. If it isn’t airtight, then the ascorbic acid will spoil much quicker than usual.

How to Store Ascorbic Acid

Buy small bottles of ascorbic acid to reduce waste. Since ascorbic acid can go bad within several months, try to avoid buying more than you can use during that time. Look for sample-sized bottles to start. If you go through several bottles within a few months, then you could upgrade to a bigger jar or start buying it in bulk.

  • Ascorbic acid loses its potency over time, so it’s better to buy only what you’re able to use within a few months. That way, you can replace it with fresher ascorbic acid in the future.
  • Keep an eye on the expiration date printed on containers. If you don’t plan on using the ascorbic acid every day, you might choose a product with a later expiration date, such as a powder over a liquid.


  • Ascorbic acid loses its potency over time. Even if an ascorbic acid still looks fresh, it won’t be as nutritious as it was when you first opened the container. Use it as soon as possible for the maximum benefit. Thanks! Helpful 0 Not Helpful 0
News Related


GPs demand more cash to see patients as documents reveal full impact of remote appointments

© iStockphoto A young man in a doctor’s surgery – iStockphoto GPs have demanded more money to return to face-to-face appointments, as official documents revealed the full impact on patients ... Read more »

Trump's ongoing mission to reshape the GOP in his image just scored a win

Just 10 Republicans voted to impeach former president Donald Trump after he incited a mob to attack the U.S. Capitol on Jan 6th. Now one of them is leaving Congress ... Read more »

US coronavirus: FDA advisers rejected Pfizer's booster shot application -- but may amend the question for another vote

Advisers to the US Food and Drug Administration on Friday rejected Pfizer’s application to add a third — booster — dose of its Covid-19 vaccine to its original two-dose regimen ... Read more »

The FDA's expert panel backs COVID-19 booster shots for adults 65+ and those at highest risk of severe disease

© Reuters The federal government has provided COVID-19 relief in numerous forms, from free vaccines to economic programs. Reuters An expert panel recommended that the FDA authorize booster shots for ... Read more »

FDA Advisers Back a Narrower Authorization for Pfizer Booster

(Bloomberg) — The Covid-19 vaccine booster shot proposed by Pfizer Inc. and BioNTech SE should be given to a smaller group of people who are the most vulnerable to serious ... Read more »

FDA advisory group votes in favor Covid booster for at-risk groups

The vote came after the committee overwhelmingly rejected recommending boosters to the general population. Read more »

FDA Panel Rejects Pfizer Booster Plan, Mulls Narrower One

(Bloomberg) — A U.S. Food and Drug Administration panel of expert advisers voted against a third dose of the Pfizer Inc.-BioNTech SE vaccine for everyone 16 and older but was ... Read more »

What Is Multiple Myeloma? Doctors Explain This Plasma Cell Cancer

© Provided by Getty Images / Jo Imperio Most of the time, multiple myeloma lurks quietly until it’s discovered during routine lab work, although sometimes people may experience bone ... Read more »

Broad U.S. Booster Plan Rejected; Testing at Apple: Virus Update

(Bloomberg) — A U.S. Food and Drug Administration panel of expert advisers voted against a third dose of the Pfizer Inc.-BioNTech SE vaccine for everyone 16 and older but appeared ... Read more »

FDA's vaccine advisers reject request for booster doses

Vaccine advisers to the US Food and Drug Administration rejected Pfizer’s application to add a third, booster dose of its coronavirus vaccine to the two-dose regimen. But they reserved the ... Read more »

FDA advisory group votes against Covid vaccine booster dose

A second vote will follow discussions about possible changes to the recommendation. Read more »

All the Benefits of Zucchini, Explained

© Provided by Shape Getty Images If you’re looking to supercharge your diet, it might be time to reach for zucchini. The squash’s packed with essential nutrients, from disease-busting antioxidants ... Read more »

Our 10-Minute Pilates DVD for Women Is 20% Off on Amazon

© Prevention Prevention’s 10-Minute Pilates comes with six fun, gentle, and effective Pilates workouts that focus on breathing, stretching, and lengthening your muscles. You’re far from alone if you rely ... Read more »

Study finds Moderna's vaccine most effective against hospitalizations

New data released Friday by the Centers for Disease Control and Prevention found that Moderna’s COVID-19 vaccine was the most effective against preventing COVID-related hospitalization over a recent five-month period, ... Read more »

Deaf Woman Goes Viral in Tearful Video After Being Refused Service at Dunkin' Donuts—Here's What Happened

A deaf woman’s video has gone viral on TikTok after sharing her story of being refused service. In an emotional two-part video, Shannon Heroux recounted to viewers how staff at ... Read more »

Why Protagonist Therapeutics Stock Is Tanking Today

© Provided by The Motley Fool Why Protagonist Therapeutics Stock Is Tanking Today What happened Shares of Protagonist Therapeutics (NASDAQ: PTGX), a clinical-stage biotechnology company, are plummeting today. As of 2:26 ... Read more »

Should I Get the COVID-19 Booster?

If you’re immunocompromised because of medical conditions like cancer, or because you’re on treatments or medications that weaken the immune system, you’re now eligible to receive a third dose of ... Read more »

FDA Panel Rejects Broad Pfizer Booster Plan, Mulls Limited One

(Bloomberg) — A U.S. Food and Drug Administration panel of expert advisers voted against a third dose of the Pfizer Inc.-BioNTech SE vaccine for everyone 16 and older but appeared ... Read more »

Why You Shouldn't Gargle Betadine to Combat COVID-19, According to Experts

It seems like only yesterday the Food and Drug Administration was warning the public against using Ivermectin (aka horse medicine) to prevent COVID-19. And while the actual COVID-19 vaccines remain ... Read more »

Doctors Warn Against Using Betadine in Nasal Spray or Mouthwash to Prevent COVID-19—Here's Why

From hydroxychloroquine and veterinarian doses of the antiparasitic drug ivermectin, questionable—and potentially harmful—treatments for COVID-19 have circulated the internet since the pandemic first hit. The latest misinformed trend, gargling Betadine ... Read more »

Phillies Star Erroneously Blames Vaccine For Career-Worst Season

Philadelphia Phillies shortstop Didi Gregorius is having a season to forget. With the regular season almost over, the 31-year-old has a .217 batting average with 11 home runs and 47 ... Read more »

SpaceX flight has raised $147M of its $200M goal for children's cancer research

The SpaceX flight taking four tourists on an extraterrestrial jaunt has also helped raise more than $147 million for children’s cancer research, and aims to bring in $200 million total. ... Read more »

Michael K. Williams and the Mental Health Debacle in Black Communities

In my first Entrepreneur article, I reflected on lessons learned from a workplace healthcare perspective following the abrupt death of the great Black actor Chadwick Boseman. Sadly, one year later, yet ... Read more »

Neuroscientist Says Her Ovarian Cancer Symptoms Were Mistaken for UTI in Viral Thread

© PATRICK T. FALLON/AFP/Getty Images A doctor holding the hand of a patient in Reno, Nevada, 2020. A Canada-based neuroscientist and professor has opened up about her experience with ovarian ... Read more »

Sarah Jessica Parker's New Wine Delivers a Surprise

© Provided by Eat This, Not That! If you’re a Sauvignon blanc fan, you probably expect bright, slightly dry, even tart notes when you take a sip. However, we all ... Read more »

What Is Celiac Disease? Symptoms, Causes and Treatment

Celiac disease – also known as celiac sprue or gluten intolerance – is a genetic disease that results in the inability to properly digest gluten, a type of protein found ... Read more »

Moderna's vaccine is the most effective, but Pfizer and J&J also protect well, CDC-led study says

A head-to-head study of all three authorized coronavirus vaccines in the United States finds the Moderna vaccine is slightly more effective than Pfizer’s in real-life use in keeping people out ... Read more »

Study rewrites understanding of modern Japan's genetic ancestry

By Will Dunham © Reuters/ISSEI KATO FILE PHOTO: Geishas, traditional Japanese female entertainers, perform their dance during a press preview of the annual Azuma Odori Dance Festival in Tokyo (Reuters) ... Read more »

An 8-Year-Old Is Now Paralyzed With a Rare Disorder After COVID Diagnosis—What Experts Say About the Possible Link

An 8-year-old girl in Minnesota named Avella Bauer has been in the hospital since March after developing a rare disorder on the heels of a COVID-19 infection. Bauer was diagnosed ... Read more »

A Guide To Pain Relief For Dogs

No pet parent likes to see their dog in pain — it’s so heartbreaking! All you want is to make your pup’s pain go away ASAP, but it’s not as ... Read more »

London Fashion Week: All you need to know about the Covid guidelines

© Provided by The Indian Express Lately, quite a few fashion events have returned to the ramp flanked by a live audience, after a long gap due to the pandemic. ... Read more »

Emma Raducanu says she's 'a normal teenager' as she explains what parents pull her up on

Normal is not a word being used to describe Emma Raducanu at the moment. The British teenager has the world at her feet following her sensational US Open success, where ... Read more »

Did you know that consuming fruit, vegetables and exercising can make you happier?

© Provided by Independent Online (IOL) Washington – new study has found that fruit and vegetable consumption and exercise can increase levels of happiness. The findings of the study were ... Read more »

Moderna Shot Retains Hospitalization Protection; Pfizer's Wanes

(Bloomberg) — Pfizer Inc.’s Covid-19 vaccine declined in protection against hospitalization after four months, while Moderna Inc.’s remained stable, U.S. researchers found in an analysis of data from 21 US ... Read more »

'iCarly' Actress Jaidyn Triplett Reveals the Mantra She Uses to Steady Her Emotions

© Provided by Courtesy of Jaidyn Triplett / @bookjaidyn This video is part of Health’s My Mantra series. Follow along with new videos on our Instagram page and share your own words of ... Read more »

Here's Why Innate Pharma Stock Is Rocketing Higher Today

© Provided by The Motley Fool Here’s Why Innate Pharma Stock Is Rocketing Higher Today What happened Shares of Innate Pharma (NASDAQ: IPHA), a clinical-stage biotechnology company, are rocketing higher ... Read more »


Idaho officials announced Thursday they’re preparing to ration hospital care due to the Covid-19 surge, and it was the last thing next-door Washington state’s top hospital advocate wanted to hear. ... Read more »

The FDA-Registered KN95 Mask My Kid Is Using at School This Year That You Need to Know About

More often than not, some of our favorite buys are small, how-didn’t-I-know-about-this products that solve an everyday problem. That’s what we’re highlighting in our Little Lifesavers series: cheap, simple purchases ... Read more »

Phillies SS Didi Gregorius blames vaccine on extended slump

Philadelphia Phillies shortstop Didi Gregorius said the COVID-19 vaccine is to blame for his career worst 2021 season. In an interview with The Philadelphia Inquirer, Gregorius said that after he ... Read more »

What Helps Your Heart More, Losing Fat or Gaining Muscle?

© Provided by HealthDay © Provided by HealthDay FRIDAY, Sept. 17, 2021 (HealthDay News) — Shedding excess weight does much more for the long-term heart health of young people than ... Read more »