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vitamin c yellow

After being uncovered to air (like whenever you open the bottle) Vitamin C will oxidize and alter colour. Sometimes serums begin out as clear and may degrade to yellow, orange, and in excessive circumstances all the way in which all the way down to muddy brown. L-ascorbic acid (aka Vitamin C) serums ought to final round 3-6 months earlier than displaying any indicators of discoloration. 


What colour ought to Vitamin C Serum be?

Vitamin C is derived from oranges so it is smart that it will flip yellow, proper? In actuality, Vitamin C dissolved in water is completely clear. An orange-tinted serum is definitely not factor in any respect!

In a 2018 interview with dermatologist Dr. Rosemary Coleman mentioned:

“Vitamin C has quite a complicated chemistry, and because it’s a water-soluble vitamin, it becomes very unstable in water solutions. Additionally, vitamin C doesn’t penetrate the skin easily, it degrades on exposure to oxygen, and it favors a pH around three, which is too acidic for human skin. Just because a company throws some vitamin C into their concoction doesn’t mean it is actually active,” says Dr. Coleman. 

Vitamin C is a difficult ingredient to efficiently bottle in serums as a result of its unstable nature however I’ve some suggestions and methods to share on tips on how to lengthen the shelf lifetime of this finicky however nicely liked skincare product. 

This submit incorporates affiliate hyperlinks; in the event you snag a product by my hyperlink it should ship some spare change my technique to preserve this slice of the web up and working.


Will utilizing a discolored serum damage my pores and skin?

Throwing out a serum simply because it barely modified colour is a painful thought. I’m an especially thrifty gal so that you’d be laborious pressed to search out me throwing a skincare product out except it’s life or dying. Utilizing an orange-tinged serum gained’t damage your pores and skin per se, but it surely may stain it! *gasp*

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The colour of your serum signifies how potent it’s. For instance, clear serum straight out of the field has 100% efficiency. Mild yellow could be 80%, orange 60%, and in the event you actually let it go and oxidize sufficient that it turns brown you could be taking a look at 50% efficiency. Every shade of oxidation can doubtlessly be a ten% lack of efficiency! Simply consider all that misplaced skincare actual property being taken up by ineffective serum.

This extremely varies relying on the formulation and focus of Vitamin C however this colour change is a visible indicator that you’re dropping Vitamin C. When it adjustments colour it’s really breaking down into completely different sorts of acids like dehydro-L-ascorbic acid and finally diketogulonic acid. So the share of Vitamin C is definitely dropping whenever you see a colour change!

Why did my Vitamin C serum stain my pores and skin?

This may occur as a result of vitamin C degrades into erythrulose—a typical ingredient in lots of self-tanners! A tan from erythrulose can last as long as seven days and takes 24-48 hours to develop. You would need to use fairly a little bit of degraded Vitamin C serum to get vital discoloration however it may take fairly some time to fade in the event you handle to get to that time. These degraded acids may also injury delicate pores and skin.

You don’t should toss a serum if it’s solely barely yellow but when it’s tipping into orange it’s time to trash it.

How Lengthy Can Vitamin C Serum Final?

An unopened bottle can last as long as three years however as soon as that seal is popped the clock begins ticking! The lifespan of your serum relies on the formulation and if it consists of substances that assist stabilize Vitamin C like ferulic acid or Vitamin E. Sometimes you’re taking a look at round 3 months shelf life as soon as the serum is opened. This timeframe could be shortened if the serum is uncovered to daylight, left in a heat spot, or is just not closed correctly and uncovered to extra air.

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How do I cease my serum from oxidizing?

There are some preventative steps you possibly can take to delay your serum from degrading. Warmth, oxygen, and light-weight are the large baddies we have to defend our serums from. If you need to use a dropper be sure you are screwing the cap again on asap. Airless pumps nix most of that air publicity so I extremely advocate them over the usual glass dropper bottles.

Vitamin C is among the few skincare substances that really profit from refrigeration, so make sure that to make some house in your nifty skincare fridge! I’ve a rambly breakdown on the professionals and cons of skincare fridges right here. When you haven’t but reached that degree of additional be sure you preserve the serum in a cool cupboard drawer distant out of your steamy rest room. I’m an enormous fan of lava-hot showers so I preserve my serums beneath lock and key in an hermetic cupboard.

Many serums will are available in darkish brown bottles as a result of Vitamin C being so unstable and photosensitive. However in the event you bought unfortunate and have a transparent bottle, make sure that that is stored in a drawer away from daylight. You would additionally cowl the glass with a sticker or tape, however I do know I personally don’t wish to mess up the producer label in case I wish to verify one thing sooner or later.


Is a Vitamin C serum value it?

Vitamin C is confirmed to enhance pores and skin elasticity, lower wrinkles by stimulating collagen synthesis, enhance the pores and skin’s immune system, and restore injury brought on by free radicals. However the darkish aspect to all of those superior advantages is Vitamin C’s wild instability which is all the cause I’m scripting this piece for you! So sure, it’s value it. However alternatively, there are a lot simpler substances to retailer that give the identical advantages so it actually boils down to non-public choice and what you wish to put up with.

Begin by on the lookout for L-ascorbic acid serums that additionally embody ferulic acid and vitamin E, which can assist stabilize the system (plus they double its photoprotection!). You may also search for formulation made with ascorbyl glucoside, magnesium ascorbyl phosphate, and tetrahexyldecyl ascorbate.

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I’d relatively have a mixture serum that can final lengthy sufficient for me to work by all the bottle as a substitute of a purely Vitamin C serum that can oxidize inside 3 months of opening it. I don’t find out about you however I’m continually taking part in with new skincare merchandise and may’t stick to at least one product chilly turkey. It could be unimaginable for me to work by a complete bottle in such a short while body. I extremely advocate this Vitamin C & E serum by Yeouth, I bought it from iHerb right here.

Can I exploit Vitamin C serum every single day?

Vitamin C is a superb type of serum for each day use. It’s mild sufficient for any pores and skin sort and also you can be utilized twice a day in your morning and nightly skincare routine. Be sure to seal your serum in with moisturizer earlier than ending off your skincare routine. I like combining Vitamin C with the Drunk Elephant Protini cream (you possibly can test it out right here). When you’re on the lookout for a extra budget-friendly moisturizer to pair up together with your serum I extremely advocate the Nature Republic Tremendous Aqua Max Cream.

When you need assistance discovering the suitable sort of serum in your pores and skin sort take a look at my information right here!

Are you a fan of Vitamin C? If not, what’s your favourite skincare ingredient?


About Me – “vitamin c yellow”

I’m a skincare and sweetness nerd that watched means too many episodes of MythBusters in my impressionable youth which result in the creation of GirlChickBetty. I like to interrupt down skincare myths and actually put merchandise to the take a look at!



GirlChickBetty is a participant within the Amazon Companies LLC Associates Program, an affiliate promoting program designed to supply a method for us to earn charges by linking to and affiliated websites.




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