Klairs

EGF Blue AC Calming Serum.

Serums

About this product

A serum designed to calm and treat acne-prone skin through a blend of antibacterial and gentle exfoliating ingredients with hydrating amino acids.

Full ingredients

Water (Aqua), Glycerin, 1,2-Hexanediol, Butylene Glycol, Niacinamide, Propanediol, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, C12-14 Pareth-12, Tromethamine, Ammonium Acryloyldimethyltaurate/VP Copolymer, Allantoin, Ethylhexylglycerin, Adenosine, Xanthan Gum, Sodium Phytate, Melaleuca Alternifolia (Tea Tree) Leaf Oil, Melia Azadirachta Leaf Extract, Melia Azadirachta Flower Extract, Malachite Extract, Coccinia Indica Fruit Extract, Solanum Melongena (Eggplant) Fruit Extract, Aloe Barbadensis Flower Extract, Sodium Hyaluronate, Ocimum Sanctum Leaf Extract, Hydroxycinnamic Acid, Curcuma Longa (Turmeric) Root Extract, Corallina Officinalis Extract, Rutin, Capryloyl Salicylic Acid, Guaiazulene, Gluconolactone, Sea Water, Sodium PCA, Dipropylene Glycol, Panthenol, Brassica Oleracea Capitata (Cabbage) Leaf Extract, Camellia Sinensis Leaf Extract, Centella Asiatica Extract, Hydrogenated Lecithin, Sorbitan Olivate, Cetearyl Olivate

Guru Score

78%

Approved

Early verdict · Few reviews so far

2Gurus

1Approved

1Mixed

0Skip

What they liked

Hydrating amino acids in the formula
Tea tree oil for bacteria-prone acne

What they flagged

Tea tree oil may irritate sensitive skin

What the gurus are saying

Tea tree oil drives this serum's bacteria-fighting approach, though as an essential oil it's definitely not for everyone. It pairs the tea tree with LHA, a gentler salicylic acid alternative, plus malachite extract and hydrating amino acids. Anyone with reactive skin may want to patch-test first; those who tolerate tea tree well find it effective for bacterial breakouts.

Synthesized from 2 expert reviews · most recent take August 2025

Best for

Acne-prone skin

Type

SerumsDrops & dropper

Key actives

Niacinamide Hyaluronic acid Salicylic acid (BHA)

Formula notes

Fragrance-freeNo drying alcohol

Where to buy

Amazon → Google →

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How it works Independent by design. Every take comes from a creator we have no relationship with. We do not ask anyone to review, and affiliate links never move a score.

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 Approved takes Critical takes Mixed takes Hide sponsored

AliceintheRabbitHole

59k subs

✓Mixed

"This is the Klairs EGF Blue AC Calming Serum. I was quite surprised to see tea tree oil, an essential oil, in this product, which is technically a fragrance ingredient, though it's a potent antimicrobial ingredient, fantastic especially if your acne is related to bacteria. It has malachite extract, tea tree, LHA which is a more gentle alternative to salicylic acid, and hydrating amino acids, so this is quite a nice formula. But know that even though tea tree oil works for a lot of people, it still is an essential oil, so it still won't work for everyone."

No BS Beauty

89k subs

✓Approved

"Once it gets more into stock, I'll definitely order it."

What the evidence says.

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

Niacinamide

Niacinamide has evidence behind it for redness, uneven tone and supporting the skin barrier, and it is usually well tolerated even by skin that reacts to most things.

Source: DermNet

Salicylic acid

Salicylic acid dissolves in oil, so it can get into a pore rather than just working on the surface. That is why it has long-standing evidence for blackheads and milder acne.

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 Klairs EGF Blue AC Calming Serum?

A serum designed to calm and treat acne-prone skin through a blend of antibacterial and gentle exfoliating ingredients with hydrating amino acids.

Is Klairs EGF Blue AC Calming Serum worth it?

Mostly yes. 1 of the 2 gurus who reviewed it give it their stamp of approval, for a Guru Score of 78%.

What is Klairs EGF Blue AC Calming Serum's Guru Score?

Klairs EGF Blue AC Calming Serum holds a Guru Score of 78%. That is our read on how warmly the experts talk about it, based on the verdicts of 2 expert reviewers we have collected.