My skin is sensitive and sometimes develops blackheads and acne. The product was made by IOPE, which has been researching retinol for over 30 years, so I trusted it. Especially, it contains IOPE's proprietary 'Prescription Retinol' that helps reduce skin irritation and absorb quickly. The moment I applied it, the formula felt soft and melted into my skin smoothly. After using it consistently for a few days, my skin felt much firmer and smoother after cleansing. It absorbed lightly without feeling heavy or stuffy, so I can use it comfortably morning and night. This serum is a '0.0 Irritation Retinol Serum' that minimizes irritation, so even retinol beginners or those with sensitive skin can use it easily. It has passed skin clinic tests, sensitive skin tests, and hypoallergenic tests, which gave me more confidence. I highly recommend this to anyone who wants to address skin elasticity and texture in one product.

There's really nothing else. When it comes to retinol, it's definitely Amore Pacific, right? It's gentle and good, good.

That's right, since it's a high-end product, the texture is quite different when applied to the skin. It spreads on smoothly and gently, and there was less irritation than expected. With consistent use, my skin texture became really smooth, and the appearance of fine lines and pores seemed to improve a bit. I felt like it was worth the money!

Nonetheless, due to the nature of retinol, there was a bit of dryness in the beginning. Especially for those with sensitive skin, an adjustment period seems necessary. And the price is high, so I did ponder a bit when it came time to repurchase... Using it generously every day is a burden.

At first, I recommend using it only once every 2-3 days, and in very small amounts. And on the days you apply retinol, be sure to apply a generous amount of moisturizer to care for your skin barrier! Sunscreen is an absolute must during the day. I was able to use it this way with hardly any irritation.