The Retinol 0.5 Oil — Reddit Reviews
by COSRX
Updated October 13, 2026
0.5% retinol in squalane oil for fine lines; introduce slowly.
What the community says
A 0.5% retinol oil for stepping up from lower strengths, cushioned with squalane and vitamin E. Reddit users report fine-line use on dry, mature skin, though severe reactions and counterfeit reports make gradual introduction essential.
What this means for you
What people love
- 0.5% retinol step-up after lower strengths
- Squalane base adds moisture for dry, mature skin
Watch out for
Product details
Skin Type
Product Traits
Skin type data limited
Where to buy
What the science says
Anti-Aging
Strong evidence
Retinol: 16 studies tested it on its own. See all 23 studies
What the studies found
- Most studies found retinol helped with signs of aging, especially wrinkles, uneven tone, and sun damage
- It often improved fine lines and wrinkles, including crow's-feet and forehead wrinkles
- It also helped skin look brighter, smoother, and more even in tone
- Some studies found it worked about as well as tretinoin for facial sun damage
- The most common side effects were redness, irritation, scaling, stinging, and dryness
Studied at 0.002–5%this product: 0.5%
Hyperpigmentation
Some evidence
Retinol: 6 studies tested it on its own. See all 12 studies
What the studies found
Texture/Pores
Not proven yet
Few or mixed studies. This claim isn't established.
Retinol: 2 studies tested it on its own. See all 3 studies
What the studies found
- Both studies that tested it on its own found it helped with skin texture and pores
- Studies found retinol made skin feel smoother and less rough
- One study found it improved uneven skin tone along with rough texture
- It worked about as well as tretinoin for these skin changes
Studied at 0.25–3%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 — 8 mentions across 5 threads
COSRX The Retinol 0.5 Oil on Reddit, in one place — 5 threads from r/koreanskincare, r/AsianBeauty and 2 more, summarized.
“Cosrx The Retinol 0.5”
Mentioned
“The Retinol 0.5 Oil”
Mentioned
“Round Lab Dokdo cream, Cosrx The Retinol 0.5”
Mentioned
“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
