SEOUL 1988 Retinal Serum – Formulated with Advanced Retinal Liposome 2% and 58% Black Ginseng Extract | Fine Lines and Skin Texture Care Serum | Korean Skincare, 30ml / 1.01 fl oz

I have combination skin with some texture from localized comedogenic acne, and I used the K-SECRET SEOUL 1988 Retinal Serum consistently for three months, which is how long the bottle lasted for me. I applied it three times per week, at night only, without combining it with other actives. Over time, I noticed clear positive changes in my skin. My overall texture improved, my complexion looked more even, and my skin had a noticeable healthy glow and luminosity. What impressed me the most is that I achieved these results without irritation, redness, or adverse reactions, which can sometimes happen with retinal products. The formula feels well-balanced and effective while still being gentle. My skin tolerated it very well throughout the entire usage period. Based on my experience, I would definitely repurchase this product. It delivered consistent results and performed exactly as expected from a quality Korean skincare retinal serum. Highly recommended for those looking to improve skin texture, tone, and radiance with a retinal that is both effective and skin-friendly.

Even though it contains retinal, it feels surprisingly gentle. I’ve noticed an improvement in my skin’s texture and firmness, and my fine lines look softer. My complexion also appears brighter and more even. The addition of black ginseng gives my skin a healthy, revitalized glow. I appreciate that it doesn’t leave my skin overly dry or irritated when I use it at night (I still follow with a good moisturizer). The packaging is clean and easy to use, and a small amount goes a long way.

I love this serum! I’ve struggled with using retinal and retinol products due to drying out and some irritation, but this serum is both moisturizing and pairs well with moisturizers / hydrators and is gentle on my skin while also being very effective. My skin looks and feels great, and I’m just thrilled to be able to successfully use a retinal product routinely since it’s so valuable for anti-aging. There’s a light, pleasant scent and it absorbs & layers flawlessly. There no tackiness and leaves skin soft. Love it so much I have a subscription.

Great retinal serum. Super gentle but effective!

K Secret Retinal Serum has officially earned a spot in my nighttime routine. Unlike some retinal products that feel heavy or irritating, this one goes on silky smooth, absorbs quickly, and doesn’t leave my skin feeling tight. After a few weeks of consistent use, I noticed my skin looking brighter, smoother, and more even-toned. Fine lines around my eyes and forehead started to soften, and my overall texture feels more refined. It gives results without the harsh side effects—no flaking or redness, just a gentle but effective boost. I also appreciate the thoughtful formula: it’s lightweight, layered well under moisturizer, and didn’t clog my pores. The pump packaging makes it easy to use the right amount without waste. If you’re looking for a retinal serum that delivers visible results while still being kind to sensitive skin, this is definitely worth trying.

Combination skin/ non- sensitive, currently living in cool wet climate. I have been using this product for 6+ months and I’m completely obsessed with it!! Was recommended to me by an influencer who struggles with sensitive acne prone skin if that info helps! I’ve noticed my skin has never felt smoother since using it. Seems like my fine lines in my t-zone have reduced and my smile lines too!! I use it every night. After toning with all natural witch hazel I pair with gentle moisturizer for sensitive skin and that’s it. Doesn’t have a strong smell and product melts into your skin.

I love this retinal, it brightens and fades hyperpigmentarion.

I was looking for a reasonably priced retinol to replace my Paula's choice 1% retinol. I have been using this product for about 2 months it is not irritating my skin but I have a tolerance to retinals I'm not sure how I feel about this product yet I definitely prefer the Paula's choice 1%. I feel it did more for my skin then the k- secret 2% retinol but if you are on a budget this is better priced I don't think I will repurchase this again. But I will finish up this bottle so it's not that bad and if you put too much on your skin will get very sticky so less is more I don't like the texture but the good points are it has not irritated my skin and I have very sensitive skin