Glycolic acid is wonderful for skin turnover and I have been looking for a product that gets rid of hyperpigmentation and acne scars for a while, and this is a wonderful product for just that. Effectiveness It takes a while for your skin to get used to the product because of its potency, but after a week or so I started to see progress in my skin. My skin's texture was smoother with fewer bumps and redness. Ease of Application It's honestly the easiest application of glycolic acid out there. You just wipe it on your face after cleansing and apply a moisturizer after it dries. It's a fast and easy way to get your glycolic acid without any fuss. Scent It doesn't smell horrible but it does smell slightly medical which is from the acid. It's not too overwhelming after a while but upon initial contact with my skin I was not the biggest fan of the scent. You'll get used to it, and won't even notice it after using it for a few weeks.