붉은레드
레티놀이 효과는 있다고 하더라고요
These days, if you watch home shopping channels or commercials for vitamins or retinol, you will see advertisements for products such as blemishes or whitening ampoules.
I see this a lot; is it effective?
It is an advertisement, but they advertise it as proving improvement or effectiveness in just 7 days or 5 days.
I'm not expecting that level of effect, but I would like it to have some degree of brightening or blemish reduction. What do you think?