Built from denim experience. Made to change stonewashing.
HMS was created by Baytech Sustainable Technologies, a family-led company combining decades of denim washing expertise with a new generation’s push for cleaner fashion production.
OUR STORY
HMS began with a simple question:
Can we keep the authentic abrasion of pumice without accepting the sludge, waste, and operational problems that come with it?
Yavuz Baykan brought more than 30 years of denim production and washing experience to that question. After years of R&D, HMS was developed as a patented reusable stonewashing medium.
In 2020, Beyza Baykan founded Baytech to bring HMS to denim manufacturers, brands, and creative communities around the world.
Today, HMS is used across industrial, educational, and creative settings, helping the denim industry rethink one of its most waste-heavy processes.
WHAT WE BELIEVE
Responsible washing should be the new standard, not the exception.
We believe denim should keep its character.
The fades, highs and lows, worn-in edges, and lived-in feel matter. But the way we create them needs to change.
HMS exists to help the industry move away from outdated, waste-heavy processes and toward solutions that work in real factories, real collections, and real creative spaces.
DENIM SUBCULTURE TIMELINE
Cowboys and workwear
1950s rebels
1960s surfers
1970s hippies
1980s punks
1990s grunge
2000s skaters
Today
Denim has always belonged to the ones who push culture forward.
Denim begins as a fabric built for durability.
Denim becomes attitude.
Worn-in denim becomes casual and sun-faded.
Denim becomes self-expression.
Denim gets louder, rougher, and more personal.
Denim rejects polish and embraces wear.
Denim becomes movement, impact, and daily life.
HMS brings that rebellious energy into responsible washing.
SUSTAINABILITY IMPACT
Pumice:
- High material use
- Breaks down quickly
- Creates sludge
- Leaves dust
- Requires handling and storage
- Can increase rinsing
- Can create machine issues
Pumice vs. HMS
HMS:
- Reusable
- No pumice sludge
- Lower material use
- Lower transport weight
- Less garment dust
- Lower water levels possible
- Consistent abrasion
SPEAKING & WORKSHOPS
Bring HMS into your event, school, factory, or brand space.
HMS offers talks, workshops, and hands-on sessions for brands, factories, schools, trade shows, and retail spaces.
These sessions make denim finishing easier to understand by combining real tools, creative practice, and sustainability education.
MISSION
Our mission
Our mission is to make responsible washing the new standard, not the exception.
We help brands, laundries, manufacturers, designers, and students create denim effects with less waste, more control, and a stronger connection to the people behind the process.
JOBS
Want to work with HMS?
We are always open to hearing from people who care about denim, sustainability, production, education, and creative culture.
Pumice breaks down. HMS holds up.
Traditional pumice creates sludge, dust, extra handling, storage pressure, and hidden costs.
HMS is designed to create authentic abrasion with far less waste and more control.
Compare HMS with Pumice
Cleaner impact, built into the process.
97% less material
97% less CO2
Supplied to
20+ countries
37.5x more durable
Up to 20% less water per load compared with pumice
No pumice sludge
Saitex reported approx. 90% less sludge volume and 90% less transport weight
Disclaimer:
Savings and reductions depend on recipe, machine type, production volume, utility costs, waste treatment costs, and local process conditions. Site-specific trials are recommended.