Is Klairs Freshly Juiced Vitamin C Serum worth it?

The gurus are split. 3 of the 8 gurus give it their stamp of approval while 4 would skip it, which lands it in the middle at a Guru Score of 59%.

What is Klairs Freshly Juiced Vitamin C Serum's Guru Score?

Klairs Freshly Juiced Vitamin C Serum holds a Guru Score of 59%. That is our read on how warmly the experts talk about it, based on the verdicts of 8 expert reviewers we have collected.

Klairs

Klairs Freshly Juiced Vitamin C Serum.

Serums

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About this product

A lightweight vitamin C serum with 5% ascorbic acid, orange peel oil, and botanical extracts designed to brighten skin and support evening tone.

Full ingredients

Aqua (Water), Propylene Glycol, Ascorbic Acid, Hydroxyethylcellulose, Centella Asiatica Extract, Citrus Junos Fruit Extract, Illicium Verum (Anise) Fruit Extract, Citrus Paradisi (Grapefruit) Fruit Extract, Nelumbium Speciosum Flower Extract, Paeonia Suffruticosa Root Extract, Scutellaria Baicalensis Root Extract, Polysorbate 60, Brassica Oleracea Italica (Broccoli) Extract, Chaenomeles Sinensis Fruit Extract, Citrus Aurantium Dulcis (Orange) Oil, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Disodium EDTA, Lavandula Angustifolia (Lavender) Oil, Camellia Sinensis Callus Culture Extract, Larix Europaea Wood Extract, Chrysanthellum Indicum Extract, Rheum Palmatum Root Extract, Asarum Sieboldi Root Extract, Quercus Mongolia Leaf Extract, Persicaria Hydropiper Extract, Corydalis Turtschaninovii Root Extract, Coptis Chinensis Root Extract, Magnolia Obovata Bark Extract, Lysine Hcl, Proline, Sodium Ascorbyl Phosphate, Acetyl Methionine, Theanine, Lecithin, Acetyl Glutamine, SH-Oligopeptide-1, SH-Oligopeptide-2, SH-Polypeptide-1, SH-Polypeptide-9, SH-Polypeptide-11, Bacillus/Folic Acid/Soybean Ferment Extract, Sodium Hyaluronate

Guru Score

59%

Mixed

8 experts · Strong agreement

8Gurus

3Yay

1Mixed

4Nay

What they liked

Gentle enough for sensitive skin
Lightweight, non-greasy texture
Easy to layer with other products

What they flagged

Oxidizes quickly in white bottle
Can feel heated or aggressive on skin
Pricey at full retail

What the gurus are saying

This serum's gentle 5% vitamin C concentration makes it beginner-friendly and non-irritating, though gurus split sharply on whether that gentleness is a strength or a limitation. Some praise it for fading hyperpigmentation and delivering a pleasant warm flush without harshness, especially for those new to vitamin C; others find the low concentration underwhelming and wish for more potent alternatives. A critical caveat: the white bottle allows oxidation to go unnoticed, gurus recommend buying fresh and watching for yellowing. Those with deeper skin tones and sun exposure should be cautious, as one dermatologist flagged potential issues under UV and environmental stress.

Synthesized from 8 expert reviews · most recent take September 2025

Type

SerumsDrops & dropper

Key actives

Vitamin C Hyaluronic acid Peptides

Formula notes

Fragrance-freeNo drying alcohol

Where to buy

Ulta → Amazon → Google →

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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

Dr. Vanita Rattan

1.23M subs

~Nay

"If you put that for skin of color and then you go out into the sun, this is a disaster for us, especially under the harsh UV rays. Plus, you got pollution you're dealing with and dust. This is not the product for you. This is not one that I would use or one that I would recommend."

No BS Beauty

89k subs

~Nay

"Expected a little bit more. I just on their Freshly Juiced line, so they've got a couple serums, they've got this, they've got a mask. I really haven't found any of them that I love that work well for me that I think are worth repurchasing. They're not bad products overall, but for me, I find different products with better ingredients and more peptides and things like that more beneficial than something like this. But it's fine. There's nothing wrong with it."

All 4 takes from No BS Beauty

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"Klairs Freshly Juiced Vitamin C Serum has a small amount of vitamin C, and it also has the orange peel oil."

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"I personally didn't love their vitamin C products. Their Freshly Juiced Vitamin C Serum is a huge seller, and it's five percent ascorbic acid, which is very low, so it's great for sensitive skin types and some people really love it, but I personally found it had a bit of fragrant extracts and I didn't love it."

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"It's got EGF, resveratrol, and NMN in it, which I'm excited about. It has lavender flour extract and rose extract, so it will probably have no scent to it, but it isn't fragrance free. [...] Unscented means it has no scent. Fragrance free means it has no fragrance ingredients. [...] It also has micasside and some peptides in there. I'm always a fan of resveratrol. I'm always a fan of NMN. NMN is an ingredient that's new, not so sure, not a ton of real independent studies on it."

CYoung

95k subs

~Nay

"I checked the reviews and I'm not the only one seeing that. Other vitamin C serums also turn yellow over time, but at least they use a darker bottle, this one comes in a white bottle so you can't tell how fast it's oxidizing. Whenever I use it my face becomes a little more heated, so I think it can be a bit aggressive. It might react differently for other people, but I'd rather try a smaller, brown bottled option instead."

James Welsh

1.58M subs

~Yay

"Dear Klairs vitamin C, remember this one, that was really good."

AliceintheRabbitHole

59k subs

~Nay

"The Klairs Vitamin C Serum, I wish I had better things to say about this. I like Klairs, they're a K beauty brand that has some great options, but [...] I didn't love this, though some people do. Mine arrived oxidized, so at the very least with this one I think it's something where you want to make sure you're buying it fresh, and also it's not a very high concentration of ascorbic acid."

Kelly Driscoll

90k subs

~Mixed

"I absolutely loved the product because it faded hyperpigmentation on my face so fast. However, now my thoughts on this product have definitely changed. It's a product that I actually no longer use in my skincare routine and haven't for a long time. It contains 5% ascorbic acid, that's pure vitamin C, but it is a very gentle, like a beginner amount. At the time I had never tried a vitamin C product before, and this was really the sweet spot."

Nipun Kapur

411k subs

~Yay

"Klairs is a good beginner friendly vitamin C. The concentration theory, it's a non-irritating one."

Cassandra Bankson

2.46M subs

~Yay

"The Dear Klairs vitamin C that I'm using in my routine that I love, that's not in a dark container either."

All 2 takes from Cassandra Bankson

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"This one gives like a hot flash flush to the face, but [...] in a good way. It's like when [...] you step into a sauna or an air-conditioned building and step outside into hot weather, just this hot flush that [...] dissipates and feels so good. I love this. I've purchased at least three of them and I've stopped using this recently because I'm back on the Beautypie capsules, but if you're looking for a good vitamin C serum, this is definitely one to consider."

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"The Dear Klairs vitamin C that I'm using in my routine that I love, that's not in a dark container either."

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

Peptides

Peptides are short protein fragments meant to signal repair. The evidence for them is thinner than for retinoids or vitamin C, and it varies a lot by the specific peptide, so the category is more promising than proven.

Source: NIH, National Library of Medicine