Will the paint work on glass?

As far as I'm awar it will as long as the mixture is balanced and not to watery.

Would this work on a t-shirt?

Yeah pretty much, but only once, if it gets warm it turns black.

Could the paint be activated by breath (similar to the Rorschach masks all over the internet)?

I tried something similar and it worked OK. The problem is that your skin generates a lot of heat anyway so it fades a bit when you put the mask on. Enjoyed it though

how much would this cover?

It's actually a really small pack, so I would suggest using it for samples

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Thermochromic 27C Touch and Reveal Black Colour Changing Paint Ink - for Fabric Textiles - 40ml

Thermochromic 27C Touch and Reveal Black Colour Changing Paint Ink - for Fabric Textiles - 40ml

Product ID: 48890952

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Details

Brand
TSAI
Package information
Bottle
Paint type
Liquid Ink
Item volume
40 Millilitres
Manufacturer
Colour

🎨40ml dual-component mix

🖤Black-to-clear color shift

🌡️27°C activation temp

Description

🖤 Touch the future: where fabric meets temperature for instant wow-factor!

DYNAMIC COLOR SHIFT - From deep black when cool to nearly invisible when warm—captivate with every temperature change.
TOUCH ACTIVATED MAGIC - Watch your fabric transform at just 27°C—perfect for interactive designs that respond to your touch.
VERSATILE CREATIVE CANVAS - Ideal for students, hobbyists, and pros aiming to elevate textiles, promotional items, and custom apparel.
LIMITED EDITION SENSORY INK - Don’t miss out—UV exposure shortens shelf life, so grab this cutting-edge ink and start creating now.
PRECISION MIX FOR PERFECT PERFORMANCE - Equal parts slurry and binder create a flawless thermochromic ink ready for textiles and fabrics.

This 40ml thermochromic ink kit from TSAI features a 27°C activation point, turning black fabric prints transparent with heat. Designed for textiles, it requires mixing equal parts slurry and binder to produce a temperature-sensitive ink ideal for interactive, eye-catching designs. Perfect for creative professionals and hobbyists seeking innovative, touch-responsive effects.

Specifications

Manufacturer	Colour Changing Products
Brand	TSAI
Colour	Black
Number of Items	20
Ink Colour	Black

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