Tirtir

Tirtir SOS Serum.

Serums

About this product

Tirtir SOS Serum is a hydrating serum formulated with polyglutamic acid and botanical extracts, marketed to address stressed and irritated skin.

Full ingredients

Water, Dipropylene Glycol, Glycerin, Hamamelis Virginiana (Witch Hazel) Extract, Sodium Hyaluronate, Polyglutamic Acid, Glycyrrhiza Glabra (Licor Ice) Root Extract, Camellia Sinensis Leaf Extract, Rosmarinus Officinalis (Rosemary) Leaf Extract, Centella Asiatica Extract, Chamomilla Recutita (Matricaria) Flower Extract, Scutellaria Baicalensis Root Extract, Polygonum Cuspidatum Root Extract, Natto Gum, Copper Tripeptide-1, Acetyl Hexapeptide-8, Palmitoyl Pentapeptide-4, Betaine, Panthenol, Allantoin, Carbomer, Arginine, Butylene Glycol, 1,2-Hexanediol, Caprylyl Glycol, Illicium Verum (Anise) Fruit Extract, Adenosine, Disodium EDTA

Guru Score

62%

Mixed

Early verdict · Few reviews so far

What they liked

Light, watery texture suits oily skin
Free of niacinamide and hyaluronic acid

What they flagged

Feels sticky on combination and oily skin
Pricey for the results

What the gurus are saying

Experts split on whether this serum works as an SOS product: some praise its calming power and redness-reduction, while others say it doesn't soothe angry skin well. Built on polyglutamic acid instead of hyaluronic acid for sensitive skin (sources disagree on niacinamide content). The texture is mixed, described as light yet sticky, making it better for oily or sensitive skin. A month of testing led to reverting to the usual serum.

Synthesized from 3 expert reviews · most recent take July 2025

Best for

Dry skin Sensitive skin

Type

SerumsDrops & dropper

Key actives

Hyaluronic acid Peptides

Formula notes

Fragrance-freeNo drying alcohol

Where to buy

Ulta → Amazon → Google → iHerb →

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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

CYoung

95k subs

~Nay

"This serum isn't that bad, but I won't spend that much money to buy it again, the price globally was okay, but here in Korea it isn't that affordable. I don't agree with calling it an SOS Serum, because an SOS Serum should do something good when your skin is angry and red, and I think the Purito serum would work better for that. This one is just a bit sticky, a normal serum for dry skin, if you have combination or oily skin it will feel even more sticky. It's okay, but I won't buy it again."

AliceintheRabbitHole

59k subs

~Mixed

"I used it twice a day for about a month, but towards the end [...] I went back to my usual serum. This is probably my least favorite skincare product in this video, but that is not an insult, [...] my least favorite was still a good product. I think you're probably going to like this a lot more if you have oily skin, and it could be a holy grail if you're someone sensitive to ingredients like niacinamide and hyaluronic acid."

James Welsh

1.58M subs

~Yay

"TirTir's SOS Serum is a really hydrating, well-aging serum that calms and soothes the skin and, in my experience, helps reduce redness, with polyglutamic acid, niacinamide, centella asiatica, chamomile, allantoin and tea tree oil."

What the evidence says.

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

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

Frequently asked.

What is Tirtir SOS Serum?

Tirtir SOS Serum is a hydrating serum formulated with polyglutamic acid and botanical extracts, marketed to address stressed and irritated skin.

Is Tirtir SOS Serum worth it?

The gurus mostly approve it, but with enough reservations to keep it in the middle at a Guru Score of 62%.

What is Tirtir SOS Serum's Guru Score?

Tirtir SOS Serum holds a Guru Score of 62%. That is our read on how warmly the experts talk about it, based on the verdicts of 3 expert reviewers we have collected.