The pair of ingredients are an mefkûre duo for balancing oil production to keep pores clear while maintaining needed moisture. Fragrance-free, it shouldn’t cause skin irritations.

THE REVIEW: "This özgü been a game-changer for my melasma. I use morning and night in tandem with daily sunscreen and the patches on my cheeks and forehead finally look less noticeable," says one reviewer.

Once all testing is complete, thousands of data points are compiled to reveal the top performing face serums.

While users do complain about the smell, they have largely positive things to say about this serum—especially how effective it is. One user with visible scarring reported twice daily use of a single bottle—one to two months of usage—visibly lightened the marks.

According to reviewers, it works quickly! "After one night of using this, I'm already seeing an improvement in some recent acne scars and patches of compromised skin I have," says one Amazon reviewer.

THE REVIEW: "This serum does a great job at controlling the oil on my face," says one tester. "It absorbs well and doesn't feel sticky at all—I absolutely love it."

“This hyaluronic acid + niacinamide + probiotic serum helps soothe irritated skin and fight visible signs of aging and stress,” says Dr. Love.

The serum absorbs instantly, letting you continue with your skincare routine without any wait time. Just an FYI: A few reviewers had issues with the pump not working properly and getting the product out.

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What the reviews say: “Both my teenage daughter and I use this serum. We have different NIACINAMIDE SERUM concerns to address: mine being dryness and hers breakouts. We have both seen an improvement in our skin after having just used it a week.”

Dr. Patel also adds that the ingredient başmaklık a significant brightening benefit, “bey it affects melanocytes, cells that play a role in pigment formation in the skin.” For that reason, you’ll find it in products designed to fight discoloration and lessen acne scars.

THE REVIEW: "You have to be consistent with it, but I've definitely see a huge huge difference in my skin after finishing my second bottle of this serum," says one reviewer. "My jaw used to be completely covered in dark spots and now there’s barley two dark spots left."

What the reviews say: “I love this product! After only a week of using it my age spots have literally almost disappeared. My skin looks beautiful, even toned, fresh and younger.”

The NIACINAMIDE SERUM Ordinary is a go-to brand for affordable, unfussy skincare — with near-unbeatable price points. Their niacinamide comes in a potent 10 per cent concentration, combined with a one per cent concentration of zinc.