The time it takes to see results from using retinol can vary depending on individual skin type and the specific product used. According to the reviews, some users noticed improvements in their skin within a few weeks, while others reported seeing significant changes after consistent use for a few months.

One reviewer mentioned, 「After using about two bottles, those fine vertical lines between my brows actually disappeared!」Review+

Another reviewer noted, 「For me, it took a few months of regular use before I could see real, noticeable improvements in my skin.」Review+

In summary, while some users may experience quicker results, it is generally recommended to use retinol consistently over several weeks to months to see significant improvements.