This is a great product to tackle closed comedones. BHA does not help me with those but AHA luckily does! I do not use daily AHA much anymore these days as I do weekly chemical peels, but I like to use this AHA from Cosrx twice a week as it's gentle and I can use it even with the weekly chemical peels. It has no smell and is slightly tacky when applied. Comes in a convenient pump bottle that contains 100ml of the product.