Its some seaweed/kelp and thats about it, there is no potion to give you buds days after changing flowering cycle, its snake oil and a fucking expensive one at that.
MKP, potassium nitrate, and some kelp extract for $60 a liter. That's steal!
I like what they say about it on their website:
"The result is that instead of only the typical 30-55% of your stem nodes becoming hosts for flowering sites within two weeks of flowering, 70-100% of your nodes show floral initiation!"
I get flowering from 100% of the nodes without it. You just have to laugh at the marketing nonsense these companies use.