The Retinol 0.5 Oil — Reddit Reviews
by COSRX
Updated September 25, 2026
0.5% retinol oil for gradual anti-aging; oily and can irritate.
What the community says
A squalane-heavy retinol oil people use at night and ramp up slowly. Redditors reach for it for fine lines and drier, mature skin. The big knocks are the oily feel, smell, and occasional irritation.
What this means for you
What people love
Watch out for
- Oily feel turns off acne-prone users
- Can trigger small pimples and irritation
- Smell is a dealbreaker for some
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 retinol helped fade dark spots or patches
- Most studies found retinol made facial dark patches lighter
- Some studies found retinol worked about as well as other common dark-spot treatments
- A large review found retinol worked better than some other treatments for dark spots
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
What the studies found
- It helped acne in the available study
- Retinol 0.2% reduced acne when used on its own
- The study was in people with red, sore spots
Studied at 0.03–1%this product: 0.5%
Research context, not treatment advice. Studies are about the ingredient, not necessarily this exact product.
Real Reddit threads — 6 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
