Laser technology in denim has changed how the world’s most popular trousers are made. Instead of scraping fabric by hand and spraying it with chemicals to create a worn-in look, a laser beam draws the design onto the denim in seconds. Behind this shift stands one Spanish company, Jeanologia, which says more than 40% of the world’s jeans are now produced using its technologies.

Why denim was an environmental and health problem

For decades, the “vintage” look was created with harsh methods: hand sanding, spraying potassium permanganate to lighten the indigo, and stone washing that consumed huge amounts of water. The most dangerous was sandblasting, which Turkey banned in 2009 after workers died of silicosis from inhaling sand dust. According to Jeanologia, finishing a single pair of jeans the conventional way uses around 70 litres of water.

How laser technology in denim works

Jeanologia was founded in Valencia, Spain, by Enrique Silla, and launched its first laser machine in 1999. The idea is simple on the surface: fades, whiskers and rips are designed on a computer, then the laser “burns” them onto the fabric with great precision, removing part of the indigo dye without water or chemicals. The laser can even reproduce full images and patterns, not just fades.

The company does not rely on the laser alone, but on a three-step system:

• Laser: replaces hand sanding and chemical spraying.
• G2 Ozone: uses air and ozone instead of water to lighten the fabric, replacing stone washing and bleaching.
• eFlow: nano-bubble technology that delivers a tiny amount of water and chemistry to the garment to soften it, saving up to 95% of water, 90% of chemicals and 40% of energy, according to the company.

Combining all three, Jeanologia says water use drops from around 70 litres to 20 litres or less per garment, with some lines reaching the concept of “one glass of water per garment”.

Levi’s: from an hour to 90 seconds

The best-known application came from Levi Strauss & Co. In February 2018 it announced Project F.L.X with Jeanologia. According to its official release, finishing time fell from two or three pairs per hour to about 90 seconds per garment. Levi’s says the laser allowed it to eliminate thousands of chemical formulations and cut finishing “recipes” from 15–20 steps to just three, while making the final finish closer to the moment of sale instead of guessing months ahead.

Water: the industry-wide numbers

Around 5 billion pairs of jeans are produced worldwide every year. In 2018, Jeanologia said about 35% of them were made with its technology, and that its systems helped save around 8 million cubic metres of water in 2017 alone. By 2026, its stated share had risen to more than 40%. It has also developed eDesigner, a platform that lets brands design and test finishes digitally before any physical sample is made.

The next step: recycling blended fabrics

In June 2026, Jeanologia signed a memorandum of understanding with the Hong Kong Research Institute of Textiles and Apparel (HKRITA) and US-based Looptworks to create the Green Machine circular textile ecosystem (FashionNetwork). It is built on HKRITA’s Green Machine 4.0, a hydrothermal technology that separates cotton-polyester blends. Jeanologia is the first official machinery partner, and Looptworks is positioned as the first adopter. For more on this race, read our article on blended fabric recycling at Circ and Ambercycle. HKRITA has previously partnered with H&M Group and Turkish denim maker Isko.

What future designers can take from this

• Design has gone digital: fades and rips are now drawn as computer files before they reach the fabric. Digital design skills are a real advantage in denim.
• Fabric knowledge still matters: laser results vary with cotton content, fibre blend and dye type. Understanding materials is what separates a successful design from one that burns through the cloth.
• Sustainability is the market’s language: major brands ask suppliers about water and chemical use. A designer who understands these numbers speaks the industry’s language.

In short, laser technology in denim is not just a faster machine. It shows how technology can protect both workers and water without sacrificing design.

Sources: Levi Strauss & Co. Project F.L.X release (2018), HKRITA press release (June 2026), Bloomberg, FashionNetwork, Jeanologia press materials.