The Retinol 0.5 Oil — Reddit Reviews
by COSRX
Updated November 10, 2026
0.5% retinol in squalane targets fine lines; oily texture, dramatic reactions reported.
What the community says
A 0.5% retinol oil with squalane, aimed at fine lines and extra moisture for drier, mature skin. Reddit users say to start two or three nights weekly; oily skin and reactive users may struggle.
What this means for you
What people love
- 0.5% retinol focused on fine lines
- Squalane base adds moisture for drier, mature skin
- Clear ramp-up guidance: start two or three nights weekly
Watch out for
- Oily finish is a dealbreaker for acne-prone users
- Small pimples reported even every third night
- Severe reaction reported, including a prednisone course
Product details
Skin Type
Product Traits
Based on limited Reddit discussion so far
Where to buy
What the science says
Retinol has strong evidence for easing signs of aging, such as fine lines, wrinkles and uneven tone, in most studies 1. For dark spots, retinol has some evidence of fading sun spots and melasma, as all five studies that tested it directly showed improvement 2. Its effect on acne also has some evidence, with fewer pimples and blackheads reported, though another acne ingredient did better in one study 3. For smoother texture, the evidence is not proven yet, since only three studies have looked at it 4.
- Retinol for anti-aging Strong evidence · 23 studies
- Retinol for hyperpigmentation Some evidence · 12 studies
- Retinol for acne Some evidence · 5 studies
- Retinol for texture/pores Not proven yet · 3 studies
Research context, not treatment advice. Studies are about the ingredient, not necessarily this exact product.
How we grade researchFull ingredient list · 10
COSRX The Retinol 0.5 Oil ingredients
Squalane, Glycine Soja (Soybean) Oil, Di-C12-13 Alkyl Malate, Retinol(0.5%), Caprylic/Capric Triglyceride, BHT, Tocotrienols, Tocopherol, Elaeis Guineensis (Palm) Oil, Hydroxymethoxyphenyl Decanone
Listed in label order, highest concentration first. Linked ingredients have their own page.
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
