cosrx The Retinol 0.5 Oil 20ml

A 20 ml bottle that melts between your fingers like a second skin. Cosrx's Retinol 0.5 Oil works with a precise concentration — 0.5% retinol — carried in an oil base designed to let skin accept it without any harsh reaction. This isn't about overnight results; it's about steady, quiet progress, week after week.

Texture and actives — The oil is built around three lipids: squalane, Glycine Soja (Soybean) Oil and Caprylic/Capric Triglyceride, chosen for their light slip and their ability to absorb without leaving a greasy film. The 0.5% retinol is stabilised by BHT and protected by Tocotrienols and Tocopherol — two forms of vitamin E that slow down oxidation and help skin tolerate the formula better. Hydroxymethoxyphenyl Decanone rounds out the blend, while Elaeis Guineensis (Palm) Oil and Di-C12-13 Alkyl Malate keep the texture fluid and non-sticky. Clinical results conducted on 20 subjects (Dermacosmetic Skin Science Laboratory Co., Ltd.) show a 22.02% improvement in forehead wrinkles at 4 weeks, and nearly 49% improvement in pore volume after just 2 weeks.

How to use it — In the evening, after cleansing, at the moisturiser step. For the first two weeks, warm 1 to 2 drops between your fingertips and pat gently from the centre of the face outward, no more than three times a week — targeting specific areas only: under the eyes, the corners of the mouth, forehead and neck. From week three onward, you can use it every other night and gradually extend application to the whole face, depending on how your skin is feeling. The rule is simple: don't increase the amount or the area until your skin is fully comfortable with the previous step.

• Concentration: 0.5% retinol, listed on the INCI — no more, no less.
• Clinical results at 4 weeks: 16.91% improvement in external elasticity and 13.78% lifting at the corner of the mouth (based on 20 subjects).
• Formula stability maintained by the combined action of BHT, Tocotrienols and Tocopherol — retinol oxidises easily; these three ingredients slow that process down.
• 20 ml size: designed for a gradual introduction, giving your skin the full adjustment period (4 to 6 weeks) before considering a larger size.
• Store away from light and heat; a retinol oil loses its effectiveness when exposed to daylight repeatedly.