Glass Skin Refining Serum — Reddit Reviews
by Peach & Lily
Updated September 25, 2026
Niacinamide-rich serum for hydration, glow, and calmer-looking skin; pricey multitasker.
What the community says
A lightweight niacinamide serum that layers easily in AM or PM routines and gets used as an all-around hydration-and-glow step. Redditors keep calling it a staple for smoother, less oily, less irritated skin, but the $59-ish price is the recurring gripe.
What this means for you
What people love
- Niacinamide plus humectants for glow
- Layers cleanly in AM/PM routines
- Helps oily, textured skin look smoother
Watch out for
- Pricey for a serum people repurchase
- Not a dramatic acne fix for everyone
- Can be too basic if you want stronger actives
Product details
Where to buy
What the science says
Acne
Some evidence
Niacinamide: 6 studies tested it on its own. See all 17 studies
What the studies found
- Most studies found niacinamide helped acne
- Some studies found 4% niacinamide cleared acne about as well as clindamycin
- One study found 4% niacinamide improved red, sore spots, but IPL worked better
- Some research found no clear difference, and a large review said the effects were uncertain
Hyperpigmentation
Some evidence
Niacinamide: 5 studies tested it on its own. See all 24 studies
What the studies found
- All of these studies found niacinamide helped fade dark spots or patches
- In clinical trials, 5% niacinamide faded dark spots more than a placebo
- It also helped when used with salicylic acid peels, more than peels alone
- Used on its own, it helped, but one study found a niacinamide mix worked better
- One study found the fading effect reversed after stopping niacinamide
Research context, not treatment advice. Studies are about the ingredient, not necessarily this exact product.
Real Reddit threads — 22 mentions across 17 threads
Peach & Lily Glass Skin Refining Serum on Reddit, in one place — 17 threads from r/30PlusSkinCare, r/AsianBeauty and 4 more, summarized.
“For a while, I was also using Peach & Lily Glass Skin Refining Serum”
Positive
“I genuinely really liked it so I'm planning to purchase more.”
Positive
“I got it as a gift from my mom.”
Positive
“Peach & Lily Glass Skin Serum”
Positive
“Huge fan of P&L, that serum is incredible.”
Positive
“I use two serums for me face and neck; the Peach & Lily’s Glass Skin Refining Serum and Tamburin’s Tiger Leaf 100 Serum”
Positive
“My current routine does wonders for my skin and my acne has completely disappeared”
Positive
“I actually just purchased half your skin routine”
Positive
“Peach and Lily glass skin serum”
Positive
“PM: ... Peach and Lily glass skin serum or my Curology tretinoin”
Positive
“I felt comfortable experimenting with new products to address the post-inflammatory hyperpigmentation and boost hydration.”
Positive
“then Peach and Lilly Glass skin serum”
Positive
“Glass skin serum”
Positive
“I need a new routine!”
Positive
“Peach & Lily Glass Skin serum, Cosrx snail essence.”
Positive
“Glass Skin serum”
Positive
“Peach & Lily Glass Skin serum”
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