Master Serum — Reddit Reviews
by Mixsoon
Updated August 28, 2026
Hydrating, calming serum with centella and bifida for barrier support; lacks niacinamide.
What the community says
This serum focuses on hydration and soothing redness with centella, bifida ferment, and panthenol. It's a solid choice for sensitive or tretinoin-starting skin needing barrier support. However, it doesn’t include niacinamide, so layering with a niacinamide product is common.
What this means for you
What people love
Product details
Key Ingredients
Skin type data limited
Real Reddit threads — 13 mentions across 10 threads
Mixsoon Master Serum on Reddit, in one place — 10 threads from r/koreanskincare and r/tretinoin, summarized.
“Mixsoon master serum 30 ml”
Mentioned
“Havent tried for long enough to know as i dont really need it in my routine .”
Mentioned
“I love the Mixsoon master serum. It’s my go to when my skin is feeling irritated.”
Mentioned
“Mixsoon Master Serum and iUnik Beta Glucan Serum”
Positive
“Holy grails of hydration?”
Positive
“would love anymore suggestions”
Positive
“The other serum I think you could find really useful while you’re getting started on the tretinoin is the Mixsoon Master Serum.”
Mentioned
“If you’re planning on starting tretinoin soon, that’s the one I’d go with.”
Mentioned
“The iUnik Beta Glucan Serum is really good.”
Mentioned
“Mixsoon Master Serum.”
Positive
“It’s incredible.”
Positive
“Only drawback is it doesn’t contain niacinamide so I usually combine it with a product or two that does.”
Positive
“Personally I really like the Mixsoon Master Serum.”
Mentioned
“I think serums that contain barrier supporting ingredients are great all of the time”
Mentioned
“if it’s the right serum, especially when starting tretinoin.”
Mentioned
“A much better barrier supporting and calming option is the Mixsoon Master Serum.”
Mentioned
“Contains centella, bifida ferment and panthenol and no irritants or fragrance.”
Mentioned
“In general I would just make sure you’re using very calming, barrier supporting products throughout the rest of your routine.”
Mentioned
