All products are independently selected by our editors.
If you buy something, we may earn an affiliate commission.
), plus short- and long-term efficacy.

Collage: Gabrielle Langdon; Photos: Courtesy of brands and original images byGlamourstaff
My dull, dry skin looks smoother and more awake with consistent use.
Vitamin C is an antioxidant and ourbodies need itto function properly.
A more radiant complexion and smoother texture over time.

Original video byGlamourreviewer Brigitt Earley
(Thinkglass-like skin.)
What does vitamin C serum do?
Vitamin C also aids in reducing hyperpigmentation anddark spotscaused by acne scarring or sun exposure.

Original image byGlamourreviewer Brigitt Earley
Tetrahexyldecyl ascorbate, which tends to be more stable than its counterparts (read it lasts longer).
Pay attention to the concentration too.
Less than 10% is not as effective, and over 20% can cause skin irritation.

Original image byGlamourreviewer Brigitt Earley
A supporting cast of active ingredients, like vitamin E and ferulic acid, can also boost its efficacy.
Some vitamin C serums may even boast nice-to-haves includinghyaluronic acid, squalane, and other hydrators.
In addition, peep the packaging that houses any vitamin C products youre considering.

Vitamin C is notoriously unstable, so it can oxidize with light and heat.
Doing so will ensure you get the maximum benefit without risking irritation.
How often should you use vitamin C serum?

Remember to always follow the utility withsunscreen.
How to apply vitamin C serum
Apply vitamin C serum after cleansing your skin once daily in the morning.
Allow it to sit for a few minutes for maximum absorption.

Original image byGlamoursenior commerce editor Jenifer Calle
Does vitamin C serum expire?
Oxidized vitamin C may even cause skin irritation for some individuals.
Yes, you’ve got the option to use theniacinamide serumswith vitamin C products.

Original image byGlamoursenior commerce editor Jenifer Calle
Overall, vitamin C pairs well with other popular skin-care ingredients, says Dr. Hartman.
Vitamin C pairs well with niacinamide, caffeine, vitamin E, ferulic acid, and hyaluronic acid.
I recommend looking for vitamin C products with complementary active ingredients to get the most bang for your buck.

Does vitamin C help with acne?
During this time we evaluated everything from consistency to scent, plus monitored both short- and long-term efficacy.
Ive been using the product on and off for a number of years (at least three!

Original image byGlamourcommerce producer Leilani McQuay
Also, a little bit goes a long way, helping to justify the overall value here.
(Check out ourOrdinary reviewfor more affordable standouts from the brand.)
She didnt experience any redness or burning, either.

Original image byGlamourcommerce producer Leilani McQuay
The secret, says Morse?
Mix it with your favorite hydrating serum orface moisturizerto reduce its somewhat gritty texture.
Its an amazing facial serum packed with hydrating hyaluronic acid and vitamin E, she says.

Original video byGlamourreviewer Brigitt Earley
That means youll reap moisturizing benefits in addition to the brightening ones.
On the plus side, this improves efficacy and makes the serum last longer at the same time.
I noticed my overall complexion did look brighter and my skin felt smoother.

Original image byGlamourreviewer Madison Flager
Calle says this product doesnt have the same off-putting smell as others shes tried in the past.
It was also quick to absorb and entirely non-irritating.
I dont have extremely sensitive skin, but harsh products tend to cause redness.

Original image byGlamourreviewer Madison Flager
Im happy to report that I didnt experience any itching, burning, or redness.
The bottle features a dropper, so its easy to dispense the right amount, she says.
The serum felt lightweight upon program, lends a subtle glow, andmost importantlydidnt cause any irritation or burning.

Best for Fine Lines and Wrinkles:Sunday Riley C.E.O.
Glow Vitamin C & Turmeric Face Oil
Sunday Riley C.E.O.
The inclusion of turmeric provides anti-inflammatory properties, making it suitable for redness-prone skin too, she says.

Original video byGlamourreviewer Brigitt Earley
Just note: Oily or acne-prone skin types might find the oil-heavy formulation too rich.
I appreciate the size and shape of the bottle too, she adds.
Plus its TSA-friendly in size.

Original image byGlamourreviewer Brigitt Earley
Most importantly, Flager told us its a great addition to her morning routine.
Zeichnerand Dr. Rabach both nominate this soothing formulation from LOreal Paris.
This one went on really smoothly and wasnt sticky at all.

Original image byGlamourreviewer Brigitt Earley
And a little goes a long way, which makes it even better for the price point.
The jury is still out on just how powerful it is in terms of brightening properties, though.
Its also less messy than a liquid serum thanks to its gel-cream consistency that absorbs in a snap.

Original video byGlamourcommerce writer Alanna Martine Kilkeary
On the downside, the added fragrance may not suit sensitive skin types, says Dr. Collins.
Dr. Collins calls it a powerhouse formula that delivers potent antioxidant protection.
But, boy, does it work, she says.

Original image byGlamourcommerce writer Alanna Martine Kilkeary
In the long-term, I found this one gave me a more even-toned and overall brighter complexion.
On the downside, she found the smell off-putting and the texture a bit sticky.
She also likes that it has a lightweight texture that suits all skin types.

Original image byGlamourcommerce writer Alanna Martine Kilkeary
While I cant speak to long-term results just yet, I love the consistency of the product.
Skin feels soft and silky while it absorbs rather than tacky or wet.
I also appreciate the lack of smellits nothing funky, but its not overtly fragrant either.

Original video byGlamourcommerce writer Alanna Martine Kilkeary

Original image byGlamourcommerce writer Alanna Martine Kilkeary

Original image byGlamourcommerce writer Alanna Martine Kilkeary

Original video byGlamourcommerce writer Alanna Martine Kilkeary

Original image byGlamourcommerce writer Alanna Martine Kilkeary

Original image byGlamourcommerce writer Alanna Martine Kilkeary

Original video byGlamourreviewer Brigitt Earley

Original image byGlamourreviewer Brigitt Earley

Original image byGlamourreviewer Brigitt Earley