I love these little tubes of spot treatment. When I get breakouts, I can use it very lightly over the affected area to treat and dry out the few bumps that are clustering or I can use it as a spot treatment when one huge bump pops up to ruin my day. I wouldn't recommend this for full coverage of areas. It dries my skin out after a couple days. It says it's safe to apply two or three times a day but I wouldn't apply more than twice. It's still overdrying for me twice a day but I love the affect it has on the redness and swelling of pimples so much that a little dryness and flaking is hardly a concern. I always put a little moisturizer on after using it to tame the dry skin. On larger areas it is too overdrying and you don't want a huge area all dry and flaky but a small spot treatment is okay. The product is travel size and versatile. I've even used it on my legs and arms and chest and anywhere a little troublesome bump appears. It isn't good on blackheads though. Effectiveness It takes a few days to eradicate the problems but it works immediately on swelling and redness. Ease of Application The travel size tube makes it even easier. Convenience It's compact and can go anywhere. Side Effects It dries my skin out so I use a little moisturizer but it doesn't always help with the flaking. Immediacy It takes the swelling down significantly but it may take a few days to truly help everything.