{"product_id":"cosrx-the-retinol-0-5-oil-20ml-mirai-skin-cosrx-the-retinol-0-5-oil-20ml","title":"COSRX The Retinol 0.5 Oil 20ml","description":"\u003ch2\u003eCOSRX The Retinol 0.5 Oil: Mid-Strength Retinol in an Oil Base for Dry and Mature Skin\u003c\/h2\u003e\n\u003cp\u003eThis is COSRX's strongest retinol at the time of publication: 0.5% retinol suspended in an oil-based carrier system. The oil format is a deliberate choice, not a compromise. Oil-based retinol penetrates more slowly and with less irritation than water or serum-based formulas, which makes 0.5% retinol tolerable where a 0.3% serum might cause flaking. For dry, mature, or reactive skin that wants real retinol results without the standard \"retinol uglies\" phase, this is the better entry.\u003c\/p\u003e\n\u003cp\u003eRetinol at 0.5% is considered an intermediate clinical strength. Below that (0.1 to 0.25%) is beginner territory. Above that (0.75 to 1%) is advanced. COSRX's oil delivery puts the 0.5% into a range that feels more like a prescribed treatment than an over-the-counter test. Results: visible fine line softening and improved texture within 8 to 12 weeks of nightly use. This is a serious retinol for serious users.\u003c\/p\u003e\n\u003ch3\u003eWhat It Does\u003c\/h3\u003e\n\u003cp\u003eRetinol converts on skin to retinoic acid, which binds nuclear receptors to upregulate collagen production, accelerate cell turnover, and normalize pigmentation. The oil base slows absorption compared to a water serum, reducing irritation while maintaining efficacy. Jojoba oil (typical oil base for retinol) has a structure similar to human sebum, which helps penetration without breakouts. Over 8 to 12 weeks: smoother texture, softer fine lines, brighter tone.\u003c\/p\u003e\n\u003ch3\u003eWho It's For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDry and mature skin (30s to 50s):\u003c\/strong\u003e The oil base suits dry skin profiles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntermediate retinol users:\u003c\/strong\u003e Those graduating from 0.1 to 0.3% formulations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUsers who flaked on standard retinol serums:\u003c\/strong\u003e Oil slows absorption, reduces flaking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTexture and early fine line concerns:\u003c\/strong\u003e Primary target.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNot for beginners, pregnant\/nursing, or sensitive-in-active-flare skin.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Specs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVolume: 20ml\u003c\/li\u003e\n\u003cli\u003ePrice: $30.12\u003c\/li\u003e\n\u003cli\u003eRetinol concentration: 0.5%\u003c\/li\u003e\n\u003cli\u003eBase: oil-based (jojoba and other plant oils)\u003c\/li\u003e\n\u003cli\u003eTexture: light facial oil\u003c\/li\u003e\n\u003cli\u003eFragrance: mild, natural oil note\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003cp\u003ePM only. After cleansing and toner, dispense 2 to 3 drops, warm between fingers, press into face. Avoid eye area and corners of the mouth. Wait 10 to 15 minutes, then follow with moisturizer. Start 2 to 3 nights per week for 2 weeks, work up to 4 to 5 nights. Always use SPF in the morning. Do not combine with AHA, BHA, or vitamin C on the same evening.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch4\u003eIs 0.5% too strong for beginners?\u003c\/h4\u003e\n\u003cp\u003eYes for most. Start with 0.1 to 0.3% retinol for 8 to 12 weeks first, then graduate. Jumping straight to 0.5% usually causes 2 to 3 weeks of flaking, redness, and irritation that discourages people from continuing retinol altogether.\u003c\/p\u003e\n\u003ch4\u003eWhat's the \"retinol uglies\" phase like with this oil?\u003c\/h4\u003e\n\u003cp\u003eMilder than serum-based 0.5% retinols. The oil slows penetration, so irritation builds slower. Users still report 1 to 2 weeks of dryness when starting. Back off frequency if skin gets red or peels.\u003c\/p\u003e\n\u003ch4\u003eCan I layer with other actives?\u003c\/h4\u003e\n\u003cp\u003eAvoid AHA, BHA, and vitamin C on the same night. Use retinol PM, vitamin C AM. Niacinamide is safe to pair. Hyaluronic acid and peptides are safe. Avoid strong exfoliating toners for 2 to 4 weeks after starting retinol.\u003c\/p\u003e\n\u003ch4\u003eHow long until I see results?\u003c\/h4\u003e\n\u003cp\u003eTexture improvement: 4 to 6 weeks. Fine line softening: 8 to 12 weeks. Deep wrinkle improvement: 4 to 6 months. Hyperpigmentation: 8 to 16 weeks. Consistency matters more than dosage.\u003c\/p\u003e\n\u003ch4\u003eHow long does 20ml last?\u003c\/h4\u003e\n\u003cp\u003e3 to 4 months with nightly use (2 to 3 drops). The small dropper bottle is intentional; retinol degrades over time, so a smaller fresher supply is preferable.\u003c\/p\u003e\n\u003ch3\u003eRelated Products\u003c\/h3\u003e\n\u003cp\u003ePair with the COSRX Pure Fit Cica Cleanser for barrier-protective cleansing, or explore the COSRX collection. Browse Korean retinol.\u003c\/p\u003e\n","brand":"mirai-skin","offers":[{"title":"Default Title","offer_id":51741131440416,"sku":"51816161182068","price":14.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1004\/8333\/4432\/files\/0caec131a0af68a28a38c7e645bf0b20.webp?v=1779695624","url":"https:\/\/usmirai-skin.com\/products\/cosrx-the-retinol-0-5-oil-20ml-mirai-skin-cosrx-the-retinol-0-5-oil-20ml","provider":"usmirai-skin.com","version":"1.0","type":"link"}