I wanted to to try cos de baha for so long given it has products with interesting formulations and affordable prices. So i was extremely happy to see the brand here! It's very dificult to find an azelaic acid product and more so in a serum format and this one does not disappoint. It works wonderfully on my skin, i saw noticeable improvement on my acne in 2 weeks. No scent, it absorbs well into the skin and it helps with pimples, redness and hyperpigmentation. Perfect product, highly recommend!