The Retinol 0.5 Oil with Super Vitamin E + Squalane

This is a 0.5% retinol oil suspended in squalane and soybean oil, with tocotrienols and tocopherol added to offset some of retinol's usual irritation. COSRX's own testing found pore appearance improved within two weeks and wrinkles softened by around four weeks of use, and reviewers describe it as gentler than expected for the concentration. It's better suited to people who already have some retinol tolerance rather than a first-time introduction to the ingredient.

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