When people claim that certain skincare products aren’t effective, it’s often simply because they didn’t give them enough time to properly work. “Most skincare products do not deliver immediate effects, so in order to truly benefit them, it is important to use them consistently and be patient,” says dermatologist Brendan Camp, MD via Sunday Edit. Trusting the process is the best way to see results.

According to Paula’s Choice, you should expect on average to start to notice results after two to four weeks of daily niacinamide usage if you apply it both morning and night. Fortunately, niacinamide does not make your skin more sensitive to the sun, so it’s safe to use it during both your morning and nightly routine, as long as your skin tolerates it. In fact, Healthline says that it can actually help protect your skin from UV rays by working to repair skin cells that have been damaged by the sun while also protecting them from further sun damage.

It’s important not to discontinue the use of niacinamide after seeing results, as continued treatment is essential in reaping long-term benefits. And though initial results can usually start to be seen after a few weeks, as long as you are consistently and regularly using , you can expect your skin’s texture, dryness, distortion, and overall appearance to continue to improve over time.