Turmeric can help reduce the appearance of dark spots and acne scars, but it won't work overnight. You will need to use turmeric for several weeks or months before you notice results! Plus, taking curcumin orally may be even more effective than applying turmeric topically. Because curcumin is fat-soluble, it works best when combined with certain foods, such as yogurt. Not to mention, it's safe to use daily, so you can take turmeric supplements every day if necessary.