I have used Timeless Vitamin C by purchasing it directly from time to time. In fact, I didn't notice a big difference in efficacy compared to other vitamin C serums sold in Korea, so I didn't bother buying it directly at the inconvenient and expensive price, but when I saw it on iHerb, I bought it along with my nutritional supplement. I am in my 40s and have dry but sensitive skin that also causes problems. Because the ingredients are relatively mild, there is no significant irritation when applied. Packaging, including packaging and containers, has changed recently. Containers that used to be plastic have been replaced with glass. It's a smaller and heavier container (the contents and capacity are the same). The scent is almost unscented, but if it turns yellow or smells like rust, it's rancid, so be sure to check after purchasing. Be sure to keep it in the refrigerator before using it (it's written on the product!) I don't know if I could find it, but there is no expiration date on it, and there are many similar substitutes for vitamin C serum products in Korea, so definitely! Absolutely! I have to use this! I didn't think so, so I took off one star. Considering other substitute products, the price of 38,000 won, which is close to 40,000 won, does not have much merit (you know that Korean consumers have to manage their star ratings well to prevent product prices from rising, right?)
