Want to make your own “Blacklight Version”? You don't need invisible ink, instead use a highlighter. : r/gravityfalls

Gravity Falls invisible ink edition

Gravity Falls Journal 1-2-3 Unofficial, 20x27 Cm, English

Gravity Falls Journal 3 Special Edition + invisible ink!! - 3

Gravity Falls Journal 1-2-3 Unofficial, 20x27 Cm, English

Gravity Falls Journal 1-2-3 Unofficial, 20x27 Cm, English

That Mows Like A Harvest — JOURNAL 3 BLACKLIGHT EDITION REVEALED

I literally just discovered this, but the Invisible Ink used in

That Mows Like A Harvest — JOURNAL 3 BLACKLIGHT EDITION REVEALED

I literally just discovered this, but the Invisible Ink used in

That Mows Like A Harvest — JOURNAL 3 BLACKLIGHT EDITION REVEALED

Gravity Falls Journal 1-2 Unofficial, 20x27 Cm, English, Invisible

How to Make Invisible Ink : 6 Steps - Instructables

DIY Invisible Ink!

That Mows Like A Harvest — JOURNAL 3 BLACKLIGHT EDITION REVEALED