Ambercycle’s CEO on Why Traditional Recycling Won’t Work, and What His Technology Does Instead

Camay Abraham
Camay Abraham is a journalist, researcher, and a freelance reporter for dot.LA. She covers fashion, tech and culture and has previously written for Glossy, i-D, Dazed and Screen Shot, among other outlets. She has an MA in fashion psychology from London College of Fashion and has been interviewed by Vice and ABC Australia for her work in fashion and well-being. Pronouns: she/her.
Ambercycle’s CEO on Why Traditional Recycling Won’t Work, and What His Technology Does Instead

Few industries are as tangled with buzzwords as the fashion industry. Clothing brands, rightly concerned about their tremendous effects on the environment, are eager to call their collections “green” or “sustainable.” But making tangible changes in how clothing is produced and distributed has been a struggle.

On Tuesday, L.A.-based startup Ambercycle announced it raised a $21.6 million Series A round to try to tackle the problem. The funding comes from fashion heavyweights including H&M (which has used its technology in recent collections) and online fashion and shoe retailer Zalando, among others. It will go to ramping up production of the company’s fiber regenerative technology, which it created and piloted in a manufacturing plant downtown.


Ambercycle co-founders Shay Sethi and Moby Ahmed are scientists and former UC Davis college roommates. The two see themselves as different from traditional fashion or manufacturing founders – and other research-based innovators.

“Traditionally, people have always thought, ‘here's an interesting technology, how do we craft a story around it?’” Instead, Sethi says, Ambercycle “start[s] with the products that we would really like to see and then work backwards into the technology. We develop, do research and engineering that way instead of starting in the lab.”

Ambercycle CEO and co-founder Shay Sethi

Ambercycle CEO and co-founder Shay Sethi

Their technology is able to break down the components of clothing to its basic polyester materials, separating its natural fibers and dyes, and creating a new material in the process, which they call cycora.

“We imagined a technology that could take an old t-shirt and turn it back into the yarns required to make that green t-shirt again,” he adds. “Anything that's in your closet today – like yoga pants or dress shirts – that's traditionally made of polyester can be made with cycora.”

Sethi and Ahmed started their company in San Francisco in 2015, then moved it to Los Angeles’ garment district two years later, looking for a manufacturing hub close to a center of innovation.

“We felt like this is a really good nexus for innovation, fashion – as well as material sciences,” Sethi says. “There is a very strong industry and a very strong familiarity with manufacturing so we felt it was a perfect blend. Also we grew up in California and didn't want to leave.”

We chatted with Ambercycle co-founder Shay Sethi about his company’s journey, its new funding and how it plans to get beyond buzzwords in planning a sustainable future for fashion.

What are the biggest challenges to the fashion industry?

When we consider the future of humanity, there's a couple key things that need to change. The big one is – given that consumption will not decrease – the reliance on natural resources will put a strain on the way in which we can live on this planet. So in order to change that, we need to take advantage of these traditionally viewed as waste streams and turn them back into new resources. So the future upstream will be all of these textile materials that are in our closet. But it's not really easy today to throw away or recycle our old garments.

We need to be able to have a low-friction way to throw away our garments and have them go back into a circular system. If we can tell a transparent and traceable story to a person, then brands and retailers will start to care.

Why is it so hard to recycle clothing currently?

So let's talk about our clothing. They are mixtures of different fibers – polyester and cotton, as well as dyes, additives, zippers, tags and stains – when they're at their end of life. We can't really recycle those materials, because they're these complex, intimate blends. Recycling has really struggled as a business, and also as a solution to waste, because you can't create a high quality product from those materials once they are at their end of life.

How is Ambercycle different from other recycling processes?

Most recycling processes are shredding or very simple mechanical processes. You can turn a t-shirt into pillow stuffing in a similar way that you can turn paper into a sort of grey newspaper and then downcycle it; The same thing happens with textiles.

The Holy Grail is really being able to turn an old t-shirt into a new t-shirt. So over the past five years, we’ve developed technology that takes these mixtures of materials that have dyes and additives, put them through a process, and make the base raw materials needed to make those same yarns. This goes in line with what's traditionally known today as circular economy where you can reuse materials, again and again.

Will Ambercycle always be focused on apparel?

Right now our focus is on apparel.

We have a couple of luxury clients that are really interested in transitioning to circular systems. Over the next couple of years, we're going to be able to talk about those, but the major message we want to help shed light on is that every year, over 120 billion garments go to landfill. We need to, as a fashion industry, transition to a circular system. It's [not] just one or two companies that can do things; Everyone as a whole needs to adopt a new ecosystem, where things are being reused in supply chains over and over again. It's very important for this transition to involve all verticals in the power supply chain. The demand for these materials is already so high. So people already care. I think we're just trying to figure out the logistics of the society right now.

There's a lot of possibilities when you think about it. You can imagine this being transformed into a system that can take other materials as well. I think we're excited about the possibilities in the future but I’m really focused on the textile-to-textile stories today.

What do you plan to do with your recent funding?

We’re trying to scale up the number of projects we're doing with different companies across the apparel industry that will require a lot of manpower or womanpower. That's a key gap we need to fill. A technology like ours that uses sort of molecular separation technologies, that advanced material science requires a sort of scale before you can really start to see the fulfillment of these contracts.

It's very easy to make a couple of t-shirts, but it's very hard to make millions and millions and millions of kilograms of stuff. We're going to be scaling up production of one of our main materials today, cycora. Demands are already way through the roof. I felt like right now was the right time to raise external capital to accelerate that plan.

This interview was edited for clarity and brevity.

LA Tech Week 2026: Sunday’s Event Lineup

🔦 Spotlight

LA Tech Week 2026 closes Sunday with one final day of events across Los Angeles. We have organized the remaining lineup by neighborhood so you can finish the week with a few last conversations before everyone returns to their regularly scheduled inboxes.

ARTS DISTRICT

12:00 PM

CARSON

12:00 PM

CULVER CITY

9:00 AM

  • Women in Cleantech & Sustainability Hike and Network: See Details Here
    Women in Cleantech & Sustainability

6:00 PM

  • Founders pitch competition: See Details Here
    Biomorphix solutions, Nightingale regenerative

HOLLYWOOD

10:00 AM

4:00 PM

  • AI International: Film, Music Video & Micro-Drama: See Details Here
    AI International Film Festivals

MID CITY

1:00 PM

OTHER

12:00 PM

  • ORGANIC LIFE LABS™ PRESENTS THE ALIGNMENT LAB: The Science of human performance: See Details Here
    The Blue Room Collective

SANTA MONICA

8:00 AM

1:00 PM

6:00 PM

SOUTH LA

2:00 PM

  • Future Builders : Family STEM Day: See Details Here
    Black L.A. Tech Week (Community Collective)

VENICE

10:00 AM

12:00 PM

  • How to Raise Funds to Fund Any Business Using Digital Products.: See Details Here
    DN Events

VIRTUAL

5:00 PM

WEST HOLLYWOOD

3:00 PM

Each session provides unique opportunities to gain insights, network, and explore various fields of tech innovation. For updates or more event information, visit the official Tech Week calendar.

Download the dot.LA App

LA Tech Week 2026: Saturday’s Event Lineup

🔦 Spotlight

LA Tech Week 2026 heads into the weekend Saturday with more opportunities to learn, meet fellow builders and explore what is being created across the region. Browse the day’s events by neighborhood below and find the gatherings worth leaving the house for.

ARTS DISTRICT

5:30 PM

BEL AIR

5:00 PM

CULVER CITY

10:00 AM

1:00 PM

4:00 PM

DOWNTOWN

11:00 AM

2:00 PM

  • South Asians in Space, Physical AI: See Details Here
    american south asian network

5:00 PM

7:00 PM

HOLLYWOOD

8:00 PM

INGLEWOOD

10:00 PM

LONG BEACH

10:00 AM

12:00 PM

LOS FELIZ

8:30 AM

  • Griffith Observatory Hike with Longevity Cities & Don't Die LA: See Details Here
    Longevity Cities

MALIBU

5:00 PM

MARINA DEL RAY

9:30 AM

  • The Brazen Capital Walk: Connecting Women, Capital & Opportunity: See Details Here
    BrazenEra

6:00 PM

  • Build an AI workflow editor, natively in Angular: See Details Here
    Workflow Builder

SANTA MONICA

7:00 AM

  • Founders Running Club Run in Santa Monica: See Details Here
    Founders Running Club, MongoDb

9:00 AM

  • MOLTEN - Spatial hackathon (ElevenLabs, AssemblyAI, Rokoko, Datafeel...): See Details Here
    Field Lab

2:00 PM

3:30 PM

6:00 PM

7:00 PM

SOUTH LA

7:00 PM

THE VALLEY

7:30 PM

UCLA

11:00 AM

USC

9:00 AM

10:00 AM

10:30 AM

VENICE

8:00 AM

  • Open Air Health Tech: See Details Here
    Open Air Health Tech, Bowshock, Govitamins App

10:00 AM

10:30 AM

11:00 AM

12:00 PM

6:00 PM

  • Bots, Bytes & Bubbles Benefit: See Details Here
    Distinguished Minds Institute dba thinqueBytes®

VIRTUAL

9:00 AM

  • Ask a VP of Sales: Live GTM Office Hours for Early-Stage B2B Founders: See Details Here
    Kat Rucker Consulting Group

11:00 AM

WEST HOLLYWOOD

11:00 AM

  • The 10x Engineer Showed Up. The 10x Organization Didn't.: See Details Here
    Workflow Builder, Tentaro

3:00 PM

WESTSIDE

11:00 AM

2:00 PM

  • Graphic Design & Digital Printing Meetup: See Details Here
    Big Frog Custom T-Shirts & More of West LA

7:00 PM

WESTWOOD

12:00 PM

Each session provides unique opportunities to gain insights, network, and explore various fields of tech innovation. For updates or more event information, visit the official Tech Week calendar.

Download the dot.LA App

LA Tech Week 2026: Friday’s Event Lineup

🔦 Spotlight

The workweek may be winding down, but LA Tech Week 2026 is not finished yet. Friday’s events are organized by neighborhood below, making it easier to choose where to spend the day before the week shifts into its weekend programming.

ARTS DISTRICT

9:00 AM

7:00 PM

BEL AIR

10:30 AM

  • Bel Air Mansion Creative Brunch: Investors, & Artists: See Details Here
    Amino Capital

BEVERLY HILLS

8:00 AM

  • Founders & Builders: Morning Walk/Run + Coffee Meetup: See Details Here
    FitMatchLA
  • Music-Tech : Move with the Global Ikon & Lululemon: See Details Here
    The Global Ikon

8:00 PM

BRENTWOOD

8:30 AM

CULVER CITY

8:30 AM

  • Where, not How: a Roundtable on Scaling AI Adoption: See Details Here
    Mellonhead, Gamma

11:30 AM

4:00 PM

DOWNTOWN

12:30 PM

  • Rocket Launch: A USC Builders Night by TroyLabs: See Details Here
    TroyLabs - USC's premier startup accelerator

1:00 PM

2:00 PM

  • Inner Alignment: Experience Self-trust in Navigating Complexity: See Details Here
    Meridian Collective

2:30 PM

  • From Story to Revenue: How AI Is Reshaping Microdrama: See Details Here
    Storyverse, Soulscape

3:00 PM

  • Reinventing AI Infrastructure: See Details Here
    Karmel Capital, The University of Michigan Ross School of Business

5:00 PM

  • Built Different: Outliers, Underdogs and the Next Breakout: See Details Here
    Forty.5 Capital Ventures

5:30 PM

6:00 PM

  • The Music AI Can't Hear: What's Actually Missing from the Future of Sound: See Details Here
    Motif

6:30 PM

  • HR & PEOPLE LEADERS ROOFTOP HAPPY HOUR . Leadership Signals: See Details Here
    Speech & Mind

EL SEGUNDO

7:00 PM

HOLLYWOOD

10:00 PM

HOLLYWOOD HILLS

12:00 PM

  • Early stage co-founder matching: Virtual Speed Networking: See Details Here
    Kept

INGLEWOOD

7:00 PM

MARINA DEL RAY

3:00 PM

  • South Asians Shaping Digital Media: See Details Here
    american south asian network

7:00 PM

  • Tech Industry Speed Networking Marina Del Rey: See Details Here
    Los Angeles Fun Events
  • The New Wave: The Future of Hollywood In the Age of AI: See Details Here
    american south asian network

MID CITY

8:00 AM

OTHER

8:30 AM

  • Wedbush Ventures x Women in Product Breakfast: See Details Here
    Wedbush Ventures

10:00 AM

12:00 PM

2:30 PM

5:00 PM

  • Get Wired with Senra Systems!: See Details Here
    Senra Systems, Lowercarbon, Stifel

6:00 PM

6:30 PM

7:00 PM

PASADENA

12:00 PM

4:00 PM

  • Pasadena Ascends: VIP Closing Reception, Hosted by Wedbush: See Details Here
    Innovate Pasadena

PLAYA VISTA

10:00 AM

  • AI LAX Summit - Culture meets AI: See Details Here
    Governlayer.AI, AILAXSUMMIT.com, Google

6:00 PM

SANTA MONICA

8:15 AM

8:30 AM

  • Silicon Beach Volleyball Social: See Details Here
    Holland & Knight, JP Morgan, Mucker Capital

10:00 AM

  • Gen AI Observability for Engineering Leaders: See Details Here
    Amazon Web Services

11:00 AM

1:00 PM

  • Future of Photography : Discussing the future of image capture and IP protection. Cigar Lounge: See Details Here
    VICEVERSA EDITIONS
  • Self-Host Frontier AI: Running Open-Weight Models on AWS: See Details Here
    Amazon Web Services

3:00 PM

5:00 PM

  • Gold House x Speedrun Investors Social: See Details Here
    Gold House Ventures, a16z Speedrun

5:30 PM

  • The Autonomous Playbook: Scaling Revenue faster with AI.: See Details Here
    GrupaAI

6:00 PM

7:00 PM

8:00 PM

SUNSET

7:00 PM

UCLA

6:00 PM

  • The Builder's Lounge - Jazz Bar Demo Night with VEST x Cognition: See Details Here
    VEST at UCLA

USC

Fri, Oct 16 · 5:00pm — Sun, Oct 18 · 5:00pm

Fri, Oct 16 · 5:00pm — Sat, Oct 17 · 5:00pm

VENICE

7:30 AM

9:00 AM

  • Content in Tech: Coffee & Creators: See Details Here
    Narrative Content Studio, YT Jobs

11:00 AM

12:00 PM

  • What REALLY Happens After You Raise (But No One Talks About) - Funded Founder Lunch @: See Details Here
    Grow Through Story

2:00 PM

4:00 PM

5:00 PM

  • Sell before you build: See Details Here
    USC Entrepreneurship and Venture Management Association

6:00 PM

  • A16Z | ElevenLabs - Official Afterparty: See Details Here
    ElevenLabs, a16z Speedrun

7:00 PM

VIRTUAL

9:00 AM

  • Ask a VP of Sales: Live GTM Office Hours for Early-Stage B2B Founders: See Details Here
    Kat Rucker Consulting Group

11:00 AM

  • Vibe Marketing in the Age of AI Agents: Live Workshop: See Details Here
    Juliet AI, Inc.

1:00 PM

2:00 PM

WEST HOLLYWOOD

11:00 AM

7:00 PM

  • NO HUMAN, NO CREATIVITY? Who Creates Culture Now?: See Details Here
    xVibe AI, HFE Events

WESTWOOD

9:00 AM

  • UCLA Tech + Society Conference: See Details Here
    Easton Technology Management Center

Each session provides unique opportunities to gain insights, network, and explore various fields of tech innovation. For updates or more event information, visit the official Tech Week calendar.

Download the dot.LA App

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