Tretinoin is an extremely well known medication that is widely used to treat acne. Not only it helps treat mild acne but is also effective for treating moderate and severe acne. It is a vitamin A based medication which is available in both topical and oral treatment options. Although for acne like skin conditions it is usually prescribed in topical form such as gels, but to treat conditions like acute promyelocytic leukemia it is generally prescribed in oral form.
There's many brands out there that sell tretinoin. Most common ones that you'll come across are:
Since dark spots are mostly caused due to excess exposure to sun. Research on tretinoin indicates that it may help not only improve the health of the skin that's damaged by sun but may also help reduce the appearance of dark spots.
6 weeks or more are required to experience the full effect of tretinoin on your dark spots. Most people start noticing results within the first 2 to 3 weeks. Make sure to speak to your doctor if you get results really early as your doctor might need to adjust the concentration for you or help you come off it faster. It is extremely important to get tretinoin prescribed by your doctor only and not buy it from third party websites online just to save some dollars. You may not know the right concentration that would work for you.
If you're someone that doesn't really like prescription based drugs/ointments and would like to try home remedies or OTC (over-the-counter) treatments, here is the list: