COSRX The Retinol 0.5 Oil 20ml

Pure Retinol 0.5% High-Concentration Anti-Aging Oil

This high-concentration firming oil contains 0.5% pure retinol, not a retinol derivative. The silky oil formula absorbs lightly into skin while intensively targeting sagging, enlarged pores, and fine lines. Formulated with super vitamin E (tocotrienol) and 91% plant-derived squalane, it amplifies retinol's effectiveness while delivering a smooth, luminous finish without dryness.

Clinically Proven Firming Results After 4 Weeks

A human application test conducted on 20 women aged 31–65 confirmed meaningful results.

• 4% improvement in skin aging index
• 16% increase in surface elasticity, 13% increase in inner elasticity
• 12.2% improvement in eye area skin angle, 13.5% improvement in jawline skin angle
• 48% reduction in pore volume and 45% reduction in pore area after 2 weeks of use

Completed both primary irritation tests on sensitive skin and general skin primary irritation tests, confirming its gentle formula.

A Firming Booster for Intermediate Retinol Users

This concentration is ideal for those who have completed an adjustment period with 0.1% retinol products and are ready to move to the next level. After toner, dispense 1–2 drops into your palm during the serum step and gently pat from the center of your face outward to absorb. For best results, focus on areas prone to expression lines such as the forehead, outer corners of the eyes, and around the nasolabial folds. Because retinol is sensitive to light and heat, use it in your evening routine and always apply sunscreen the following day.

Use after toner, in place of your serum step

In your evening skincare routine, apply this oil after toner, in the serum step. With 0.5% pure retinol, it's concentrated enough to use on its own instead of your usual essence or ampoule. Follow with your moisturizer to lock everything in.

Evening use only. SPF is non-negotiable the next day

Retinol is sensitive to light and heat, so nighttime application is recommended. Because retinol remains active in your skin overnight, you must apply sunscreen the following morning even if you're not reapplying the product. SPF is essential throughout your entire retinol journey.

Pat gently with your fingertips to help absorption

Dispense 1–2 drops onto your palm using the dropper, then gently pat from the center of your face outward. For areas prone to fine lines, targeted application works best.
- Forehead: smooth against the direction of lines, then apply in a zigzag motion
- Smile lines: sweep upward and outward
- Neck: glide upward from the base of your neck

Layer with a hydrating serum to minimize irritation

If your skin tends to react to retinol, apply a hyaluronic acid serum first to create a hydrating base. For body care, mix 1–2 drops into your body moisturizer to boost hydration and firmness on dry skin.

Adjustment period and precautions

If you're new to retinol, do a patch test first and start with 2–3 times per week. During the first two weeks, you may experience tingling, redness, or flaking as your skin adjusts to retinol. If irritation persists, reduce frequency or discontinue use. Avoid combining with scrubs, chemical exfoliants, or professional treatments. If refrigerated, the oil may appear slightly cloudy or separated, but this does not affect product quality.

Product ingredients list.

The list of ingredients is subject to change. Please consult the packaging of the product purchased.