The Retinol 0.5 Oil — Reddit Reviews
by COSRX
Updated October 7, 2026
0.5% retinol oil with squalane for gradual nightly step-ups; oily for some.
What the community says
A 0.5% retinol oil in a squalane base, used on PM retinol nights and usually introduced slowly. Redditors like it for step-ups from weaker retinoids and for dry, mature skin, but the oily finish turns off acne-prone users.
What this means for you
What people love
Watch out for
- Oily finish puts off acne-prone skin
- Can trigger small pimples
- Too much for some reactive skin
Product details
Skin type data limited
Where to buy
What the science says
Hyperpigmentation
Some evidence
Retinol: 5 studies tested it on its own. See all 14 studies
What the studies found
- All of these studies found it helped fade dark spots or patches
- Most studies showed retinol on the skin made facial dark patches lighter
- In melasma, a 4% retinol peel faded dark patches
- Some studies found retinol worked about as well as glycolic acid or bakuchiol
- A large review found retinol worked better for dark patches than some other treatments
Studied at 0.1–10%this product: 0.5%
Acne
Not proven yet
Few or mixed studies. This claim isn't established.
Retinol: 1 study tested it on its own. See all 4 studies
Research context, not treatment advice. Studies are about the ingredient, not necessarily this exact product.
Real Reddit threads — 7 mentions across 4 threads
COSRX The Retinol 0.5 Oil on Reddit, in one place — 4 threads from r/AsianBeauty, r/30PlusSkinCare and 1 more, summarized.
“I am coming off of a 5 day course of prednisone after a terrible reaction to the new CosRX Retinol Oil”
Cautionary
“I’ve never reacted like that to anything”
Cautionary
“COSRX The Retinol 0.5 Oil — Anti-aging, helps improve fine lines and wrinkles.”
Positive
“The squalane base provides added moisture—good for drier, mature skin.”
Positive
“COSRX Retinol should be introduced gradually (2–3x per week), then increased if tolerated.”
Positive
“The Retinol 0.5 Oil with Super Vitamin E + Squalane”
Positive
“The Retinol 0.5 Oil”
Positive
“with Super Vitamin E + Squalane”
Positive
“2. COSRX The Retinol 0.5 Oil”
Mentioned
“Any product recommendations to level up from it?”
Mentioned
