The Retinol 0.5 Oil
COSRX
A concentrated retinol oil containing 0.5% retinal (a potent form of vitamin A) in a nourishing squalane base. Designed to improve skin texture, reduce fine lines, and boost cell turnover for those ready for effective retinoid treatment.
Key Ingredients
emollient, moisturizing, antioxidant
Emollient and lightweight skin conditioner
+ 5 more ingredients
Ingredient Effectiveness Data
Editorial baseline from K-beauty clinical research and community consensus. Real subscriber reports layer on as the community grows.
More Korean Serums
Frequently Asked Questions
What are the key ingredients in The Retinol 0.5 Oil?
The key active ingredients in The Retinol 0.5 Oil by COSRX include Soybean Oil (Emollient and skin conditioning agent), Retinal (Retinaldehyde) (Vitamin A derivative for anti-aging and skin renewal), Tocotrienol (Potent antioxidant that protects against free radicals), Vitamin E (Antioxidant that protects skin from free radicals), Hydroxymethoxyphenyl Decanone (Antioxidant and skin brightening agent). Drawing on K-beauty research and community consensus, key ingredients show 86% effectiveness for dehydration in dry skin types. Seoul Sister tracks ingredient effectiveness across 5,900+ K-beauty products to provide data-backed recommendations.
Is The Retinol 0.5 Oil good for sensitive skin?
The Retinol 0.5 Oil is a Korean serum by COSRX. Sensitive skin compatibility depends on individual triggers and allergies. Seoul Sister's AI advisor Yuri analyzes all 10 ingredients against your specific skin type, concerns, and known allergens to provide a personalized compatibility score. Common irritant ingredients like fragrance, alcohol denat, and essential oils are flagged automatically.
Is The Retinol 0.5 Oil good for oily skin?
For oily skin, the key factors in evaluating The Retinol 0.5 Oil are comedogenic ingredient ratings, oil content, and finish type. This serum contains 5 active ingredients. Seoul Sister's database cross-references each ingredient's comedogenic rating (0-5 scale) against your skin type to identify potential pore-clogging risks. Subscribe for a personalized oily skin compatibility analysis.
How much does The Retinol 0.5 Oil cost?
The Retinol 0.5 Oil by COSRX starts from $21.60 USD for 20ml, with prices ranging up to $22.35 across retailers. Seoul Sister tracks pricing at Olive Young, with price drop alerts for Pro members. Seoul Sister does not sell products — we compare retailer pricing so you can buy from the source.
Where to buy The Retinol 0.5 Oil?
The Retinol 0.5 Oil by COSRX is tracked at Olive Young. Prices start from $21.60 USD. Seoul Sister verifies retailer authenticity and tracks counterfeit indicators to help you buy genuine Korean skincare products. We are an advice platform and never sell products ourselves.
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