Kiehl's

Kiehl's Powerful Strength Vitamin C Line Reducing Concentrate.

Serums

About this product

A vitamin C serum from Kiehl's designed to reduce fine lines and brighten skin with their Powerful Strength formula.

Full ingredients

Propylene Glycol, Dimethicone, Glycerin, Ascorbic Acid 10.5%, Ethylhexyl Palmitate, Cetyl PEG/PPG-10/1 Dimethicone, Dimethicone Crosspolymer, Ascorbyl Glucoside 2.0%, Cyclohexasiloxane, Hydroxyethylpiperazine Ethane Sulfonic Acid, Lauroyl Lysine, Acrylonitrile/Methyl Methacrylate/Vinylidene Chloride Copolymer, Polysilicone-11, Adenosine, Hydrolyzed Hyaluronic Acid, Limonene, Isobutane, Citrus Aurantium Dulcis Peel Oil, Citrus Limon Peel Oil, Citral, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate

Guru Score

68%

Mixed

Early verdict · Few reviews so far

What the gurus are saying

This concentrate earns praise for being hydrating and enjoyable to use, though opinions split on how it stacks against other vitamin C options. One expert finds it genuinely pleasant to apply and appreciates the hydration, while another prefers alternatives. Not many gurus have weighed in yet, so there's not a broad sense of how it performs across different skin types.

Synthesized from 2 expert reviews · most recent take January 2024

What they liked

Hydrating formula
Lime reducing concentrate

What they flagged

Nothing. None of the experts who reviewed it raised a problem.

Best for

Mature skin

Type

SerumsDrops & dropper

Key actives

Vitamin C Hyaluronic acid

Formula notes

No drying alcohol

Where to buy

Sephora → 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

No BS Beauty

89k subs

~Nay

"It's got again the small amount of vitamin C, and it also has the orange peel oil that the Kiehl's offers. But in my opinion, there's one that's world's better than the Kiehl's."

Dr. Jenny Liu

323k subs

~Yay

"Another one that I have tried that I actually really enjoy that I find to be hydrating is from Kiehl's and it's their Powerful Strength Vitamin C Line Reducing Concentrate. It has 10 percent L-ascorbic acid, so pure vitamin C, and then 2.5 percent vitamin C derivative that offers additional brightening benefits along with hyaluronic acid. It's a very creamy serum. I actually find it slightly harder to spread."

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

Frequently asked.

What is Kiehl's Powerful Strength Vitamin C Line Reducing Concentrate?

A vitamin C serum from Kiehl's designed to reduce fine lines and brighten skin with their Powerful Strength formula.

Is Kiehl's Powerful Strength Vitamin C Line Reducing Concentrate worth it?

The gurus mostly approve it, but with enough reservations to keep it in the middle at a Guru Score of 68%.

What is Kiehl's Powerful Strength Vitamin C Line Reducing Concentrate's Guru Score?

Kiehl's Powerful Strength Vitamin C Line Reducing Concentrate holds a Guru Score of 68%. That is our read on how warmly the experts talk about it, based on the verdicts of 2 expert reviewers we have collected.