Yes, each individual hit is boosted, which is why it's popular with Cinccino and Breloom. Skill Link is also an ability to look at.
Keep in mind that you'll want something so that it actually hits a decent number of times, because two hits won't do much good.
60(15+15+15+15)=3600
60(15+15+15+15)=60=3600
Algebra tells use that it's the same by collectively adding the moves than it is by counting each boost individually.