Photochromic UV Color Changing Thread

We are proud to introduce the all-new photochromic thread from Langus Goods™. This thread changes color when exposed to sunlight or UV light and changes back to its original color when sunlight is blocked. If you are looking to add magic to your creation, this thread will produce results.

This thread can be used for sewing, embroidery, weaving, string art, cross-stitch, and so much more. Using a single strand will create a fine and extremely subtle effect. Plying, braiding, or cording the thread to make it thicker will create a bolder effect.

When designing a project, think about the application, including the fourth dimension: time. How should the project look before and after the color change? White to Purple, White to Blue, White to Pink, and White to Yellow respond the fastest to UV/sunlight and have the most dramatic color change effects. Most consumer UV lights have the intensity and correct wavelengths (angstroms) to activate the thread’s color change. White to Orange and White to Yellow require a stronger UV source and the necessary UV light wavelength. Low-end consumer UV lights do not have the required wavelength for activation. Direct sunlight will always create the most vibrant and dramatic color change effect!

Colors available:

White to Blue

White to Pink

White to Yellow

White to Purple

White to Orange

Yellow to Red

Length: 2,500 meters/2,700 yards
Weight: 100 grams/3.5 ounces
Thread Size: 150/2 D or 30 wt
Material: Polyester

Washing and care:
* Iron on low, avoiding direct contact. Do not steam.
* Avoid harsh detergents/chemicals
* Machine wash with cold water
* Air dry or tumble dry on low.

All orders placed before 11AM EST Mon-Fri ship on the same business day they were placed. Orders placed after 11AM EST are shipped the following business day.

Delivery for domestic orders (USA) usually arrive within 1-4 business days. Please not that it some cases, delivery may take up to 7 days.

Orders to Canada & Mexico are shipped in accordance with our same-day shipping policy and are usually delivered in 6-10 business days. 

International orders (excluding Canada & Mexico) arrive in the destination country in approximately 6-18 business days. Please note that some international orders may experience delays due to customs processing in the destination country.