This year’s event, named the Petal Party, will take place on 4 May at St Christopher's Place in central London.
It will see more than three million petals released into the air above the space, which marks an increase on last year's figure of one million.
The brand has teamed up with Lauren Pope of The Only Way Is Essex, who will deliver a DJ set on the night. The event will commence at 7pm, and it is expected to last one-hour.
The stunt aims to highlight that the ‘hay fever hangover effect’ brought on by night time hay fever can be treated with the right products.
The condition is said to be brought on when the air cools down at the end of the day and pollen falls to the ground, which leads to poor quality sleep on behalf of sufferers.
St Christopher's Place also played host to an installation by artist Rebecca Louise Law last month, which was made of 1,200 fresh flowers.