Booster is the secret Street Killer Ink ingredient, the magic dust that makes the ink more powerful than ever.

8 grams of pure power, Booster gives something extra to your inks: once added to your favourite ink, it gets deep on porous surfaces, making your mark more resistant to buff and protects from the sun for longer, thanks to anti-UV filters.

If you want the most out of your Booster, let it sit all night before use: the chemical reaction will be even more devastating!

One bag is ideal for 4 packs of 200 ml of product.