SOS Serum — Reddit Reviews
by Tirtir
Updated October 2, 2026
Hydrating serum that gives skin a glassy, dewy finish; barrier-friendly.
What the community says
A lightweight hydrating serum built around glycerin, panthenol, betaine, allantoin, sodium hyaluronate, and polyglutamic acid. It suits dehydrated or tretinoin-stressed skin that wants a glassy finish under moisturizer. If you hate dewy leftovers, this may feel too shiny.
What this means for you
What people love
Watch out for
- Can look too shiny if you want a natural finish
- More of a hydration step than a fix for acne or tone
- Not much to go on for texture or breakouts from the small sample
Product details
Skin type data limited
Where to buy
Real Reddit threads — 8 mentions across 6 threads
Tirtir SOS Serum on Reddit, in one place — 6 threads from r/AsianBeauty, r/koreanskincare and 1 more, summarized.
“Photo 7 - Tirtir Milk Toner and SOS Serum; Love both.”
Positive
“Love the serum, as it truly hydrates and makes skin look dewey.”
Positive
“I never make suggestions to others, because our skin reacts differently to products. Albeit, my favs from this stash are the Tirtir Milk toner and the SOS serum, followed by a moisturizer.”
Positive
“tirtir sos serum”
Positive
“I been loving the way it makes my skin looks.”
Positive
“it gives your skin that glassy look.”
Positive
“i also like the tirtir sos serum”
Positive
“isntree low molecular hyaluronic acid serum is really similar! i also like the tirtir sos serum”
Positive
“otherwise if you want something a bit more thick”
Positive
“About 2 nights: Purito Bamboo Panthenol Cream and tirtir SOS serum.”
Positive
“For moisturizer, I rotate throughout the week:”
Positive
“Then I repeat that cycle.”
Positive
“I just got the Medicube zero pore pad and tirtir sos serum”
Mentioned
“Tirtir sos can be used right before moisturizer”
Mentioned
“I am trying to find a way to fit it into my existing routine.”
Mentioned
“AM TIRTIR SOS Serum”
Positive
“This is my routine. Anything missing, out of order or working against me?”
Positive
“I’m mostly working on brightening and evening my skin tone, and reducing the acne I get with my cycle.”
Positive
