Princess Perfume (プリンセスパフューム Purinsesu Pafu~yūmu?) are the main transformation devices from Go! Princess Pretty Cure. They are used to transform into their Cure forms, as well as insert Transformation Keys to change into Mode Elegant, and perform Finishers.
At first, only three were made. But a fourth had been made to help the Cures successors and was going to be used to provide them with more power, until it fell into the hands of Dys Dark's Princess Twilight.
When Twilight turned back into Towa, her flames of hope purified the Fourth Princess Perfume along with the Dark Dress Up Keys in a confrontation with Dyspear.
Later, with the fourth Perfume, Towa was able to transform into Cure Scarlet, the Princess of Flames.
In order to transform, the Cures also need a Dress Up Key. They insert it into the base on top and in turn, liquid fills the inside of the perfume with their theme colors; Pink for Haruka, Blue for Minami, Yellow for Kirara, and Red for Towa. When Twilight owned one, the liquid was a very dark purple-black.
To transform, the user sprays the Perfume over themself.
A glass perfume bottle shaped like a heart with intricute designs on the front. The bottom and back are a pale pink base with designs all over them. On top is a gold lid with a heart design on the front and back, along with a vibrant pink diamond with a small hole in the center. On top is the keyhole, and before it is a small glass heart spray button.
When Twilight located the fourth, it was revealed to resemble the others. However, the glass was pale grey instead of crystal blue. The bottom and back are also grey, while the gold top is now colored a dark silver. The spray piece on front is a very dull, grey-dark pink. After being filled with black liquid, it gained a purple glow.
- These are the third perfumes used as transformation items, after Heart Perfumes and Shiny Perfume from the series Heartcatch Pretty Cure!.
- This is the sixth transformation device to appear as a cosmetic item, after Milky Palette (Yes! Pretty Cure 5 GoGo!), Heart Perfume (Heartcatch Pretty Cure!), Smile Pact (Smile Pretty Cure!), Love Eyes Palette (Doki Doki! Pretty Cure), and PreChanMirror (Happiness Charge Pretty Cure!).