Index / First Aid Beauty / 10% Vitamin C Brightening Serum
First Aid Beauty

First Aid Beauty 10% Vitamin C Brightening Serum.

About this product

A $50 brightening serum with 3-O-ethyl ascorbic acid, licorice root extract, and oat, designed to even skin tone and fade dark spots.

Full ingredients

Aqua (Water, Eau), 3-O-Ethyl Ascorbic Acid, Squalane, Sodium Citrate, Tocopheryl Acetate, Colloidal Oatmeal, Chrysanthemum Parthenium (Feverfew) Extract, Camellia Sinensis Leaf Extract, Glycyrrhiza Glabra (Licorice) Root Extract, Glycerin, Polyglyceryl-6 Polyricinoleate, Xanthan Gum, Polyglyceryl-10 Dioleate, Phenoxyethanol, Citric Acid, Sodium Benzoate, Potassium Sorbate, Sodium Hydroxide, Tetrasodium EDTA

More from First Aid Beauty 29 products · Guru Score 78% →

Guru Score

73%

Mixed

3 experts · Moderate agreement

What they liked

  • Helpful for evening out skin tone

What they flagged

  • Pricey for a 1.7 ounce bottle

What the gurus are saying

This serum's vitamin C form doesn't work the way many expect. Experts split on whether the 3-O-ethyl ascorbic acid converts to active vitamin C, with some skeptical it delivers real benefits and others citing clinical data suggesting it boosts collagen and evens tone, particularly helpful for hyperpigmentation. Gurus say the licorice root extract does most of the redness and spot-fading work, while oat provides hydration.
Synthesized from 3 expert reviews · most recent take March 2026

Type

Key actives

Formula notes

Fragrance-freeNo drying alcohol

Where to buy

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What the gurus are saying.

Every take we've logged from this product's reviews across YouTube. Click any row to watch the moment they said it.

All takes Yay takes Nay takes Mixed takes Hide sponsored
~Yay
"A beautiful formula. They've added [3-O-ethyl ascorbic acid], colloidal oatmeal, which is great if you've got dry, inflamed eczema skin, licorice root extract, a powerful tyrosinase inhibitor for hyperpigmentation, and it's in an airless pump. I really, really like this product. Definitely purchase this product if you've never tried vitamin C before."
All 2 takes from Dr. Vanita Rattan
The BEST & WORST Vitamin C for brown/ black skin | Dr Vanita Rattan
"A beautiful formula. They've added [3-O-ethyl ascorbic acid], colloidal oatmeal, which is great if you've got dry, inflamed eczema skin, licorice root extract, a powerful tyrosinase inhibitor for hyperpigmentation, and it's in an airless pump. I really, really like this product. Definitely purchase this product if you've never tried vitamin C before."
BRIDAL SKINCARE MISTAKES
"First aid vitamin C brightening serum"
~Nay
"It's a 10% Vitamin C Brightening Serum for fifty dollars. [...] 3-O ethyl ascorbic acid is not the most well researched form of vitamin C. [...] First Aid Beauty had some really good products back in the day, but they sold the company to another conglomerate and a lot of things changed and went downhill, and [...] I have not been such a fan since."
All 2 takes from Dr Dray
*NEW*Anti-Aging Skincare At Target 🛒
"Here's their 10% Vitamin C Brightening Serum. This has 3-O-ethyl ascorbic acid as the form of vitamin C, that's a stable form that may be helpful as a surface antioxidant, but if you're looking for a product that offers the full spectrum of what vitamin C does, 3-O-ethyl is unlikely to do that, because the likelihood that it gets converted to ascorbic acid is very, very low."
TONS OF SKINCARE AT ULTA TO DISCUSS 🛍 Dermatologist @DrDrayzday
"It's a 10% Vitamin C Brightening Serum for fifty dollars. [...] 3-O ethyl ascorbic acid is not the most well researched form of vitamin C. [...] First Aid Beauty had some really good products back in the day, but they sold the company to another conglomerate and a lot of things changed and went downhill, and [...] I have not been such a fan since."
~Yay
"A good product would be the First Aid Beauty 10% Vitamin C Brightening Serum. This uses 3-0 ethyl ascorbic acid, a newer derivative that doesn't have quite as much research behind it, though the clinical data that is out there is pretty promising. While this derivative is weaker than L-ascorbic acid, it does show that it has antioxidant properties, can help to boost your collagen, and help with evening out your skin tone."

What the evidence says.

Independent of what the gurus think, this is what the published research supports about the main active ingredients here.

Vitamin C

Topical vitamin C is an antioxidant with reasonable evidence for dullness and uneven tone. It breaks down in light and air, so how a product is formulated and packaged matters as much as the percentage on the front.

Source: DermNet

Humectants and emollients

Ingredients like these draw water into the surface layers and slow how fast it leaves. The evidence is for comfort, softness and hydration rather than for changing the structure of the skin.

Source: DermNet

Vitamin E

Vitamin E is an antioxidant, and it is often in a formula to keep the other ingredients stable rather than as the active itself. It pairs well with vitamin C, though on its own the evidence for visible change is limited.

Source: NIH, National Library of Medicine

Frequently asked.

What is First Aid Beauty 10% Vitamin C Brightening Serum?

A $50 brightening serum with 3-O-ethyl ascorbic acid, licorice root extract, and oat, designed to even skin tone and fade dark spots.

Is First Aid Beauty 10% Vitamin C Brightening Serum worth it?

The gurus mostly approve it, but with enough reservations to keep it in the middle at a Guru Score of 73%.

What is First Aid Beauty 10% Vitamin C Brightening Serum's Guru Score?

First Aid Beauty 10% Vitamin C Brightening Serum holds a Guru Score of 73%. That is our read on how warmly the experts talk about it, based on the verdicts of 3 expert reviewers we have collected.

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