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.

Can Technology Outpace Wildfires?

🔦 Spotlight

Hello, LA!

This week, tech headlines are buzzing with OpenAI's launch of Operator, a tool that promises to transform task automation, and TikTok’s major outage, which left millions disconnected. But closer to home, as wildfires blaze across Southern California, survival has become the focus—and technology is making it possible.

When the plume of smoke reappeared on the horizon, residents across Southern California turned to tools like Watch Duty. Over the past week, as flames surged, the app gained 600,000 new users in just one night, delivering critical, real-time information to help residents stay ahead of danger. Watch Duty, designed to provide wildfire updates, has proven to be much more than an alert system. It’s a lifeline.

The app integrates live data, satellite imagery, and community reports to send updates directly to users. Information includes fire locations, evacuation orders, and air quality indices, empowering quick, informed decisions. Its community-driven ethos—with contributions from locals, firefighters, and volunteers—ensures hyper-local and timely updates, filling gaps where traditional news outlets often fall short.

Image Source: Watch Duty

A New Era of Fire Alerts

Watch Duty redefines wildfire preparedness through technology and collaboration:

  • Fire Detection: Monitors data from satellites, agencies, and ground sources to identify wildfires.
  • Data Verification: A team of experts ensures reported activity is accurate.
  • Real-Time Alerts: Notifications are sent within 60 seconds of detection.
  • Community Contributions: Local residents provide photos and updates.
  • User Notifications: Alerts include fire size, location, and evacuation details.

These features make Watch Duty an indispensable tool during wildfire season. In 2024, the app processed over 2 million alerts and supported 50,000 evacuations, with plans to expand predictive modeling by 2025 to anticipate threats before they escalate.

Innovations Reshaping Wildfire Management

Early Detection Leaders:

  • AlertCalifornia: Operates over 1,000 cameras with machine learning to monitor high-risk areas.
  • Pano AI: Uses cameras and sensors to detect smoke and alert responders.
  • Torch Sensors: Deploys heat-detection sensors to identify anomalies early.

Image Source: Torch Sensors

Predictive and Analytical Pioneers:

  • Chooch AI: Employs drones and computer vision to monitor fire hazards.
  • Data Blanket: Uses analytics to forecast fire behavior and assist evacuations.
  • Rain: Leverages advanced atmospheric sensing and AI-driven technology to provide precise fire detection and tracking. Its real-time data on fire weather conditions and environmental factors helps agencies anticipate and respond to wildfires with greater efficiency.
  • SCEPTER: Tracks air quality and wildfire emissions using AI and satellite data.

Image Source: Rain

A Vision for the Future

As Los Angeles continues to adapt to the realities of a changing climate, tools like Watch Duty, Pano AI, and AlertCalifornia are proving to be invaluable. These technologies are not just reactive measures; they represent a shift toward proactive disaster preparedness. The question now isn’t whether technology can help but how much more it can achieve in the years to come.

With the integration of predictive modeling, AI, and real-time data, there’s hope for a future where wildfires are no longer unpredictable forces of destruction. Imagine every household equipped with predictive wildfire maps, heat-detecting drones, and AI-driven tools to guide safety decisions. The innovations are here—it's up to us to support and scale them to ensure they reach the communities that need them most. Which company, which app, or which breakthrough will emerge as the next lifeline? The possibilities for a safer, more prepared Los Angeles feel closer than ever.

🤝 Venture Deals

LA Companies

  • Favorited, a new livestream app positioning itself as an alternative to TikTok, has raised a $1.3M Pre-Seed from HF0, Soma Ventures, and several angel investors from the entertainment and social space. The platform, which participated in the a16z Speedrun accelerator program, offers features like streaks and leaderboards to boost user engagement. Favorited plans to use the funds to enhance its app's functionalities and expand its user base. - learn more
LA Venture Funds
  • Overture VC participated in a $12M Series A funding round for Bedrock Energy, an Austin, Texas-based startup specializing in geothermal heating and cooling systems. Bedrock Energy plans to use the funds to advance its geothermal technologies and expand deployments in Colorado, Utah, and neighboring states. - learn more
  • Navigate Ventures LLC participated in a $7.2M Series A funding round for XILO, a San Diego-based insurance technology startup that provides a quoting and sales automation platform to help independent insurance agencies convert the next generation of insurance shoppers; the funds will be used to scale operations, manufacturing, and commercial efforts for its acne products. - learn more
  • Upfront Ventures participated in a $5.25M Seed funding round for 1up.ai, a New York-based company that automates knowledge for sales teams; the funds will be used to empower their growing customer base, including industry leaders like WalkMe, Gladly, and Deliveroo. - learn more
  • MTech Capital participated in a $2.2M Pre-Seed funding round for Qumis, a Chicago-based AI platform designed to transform insurance knowledge work; the funds will be used to scale its AI capabilities, accelerate product development, and expand its customer base. - learn more
  • Amboy Street Ventures participated in a SEK 304M Series B funding round for Gesynta Pharma, a Stockholm-based pharmaceutical company specializing in anti-inflammatory and pain-relief treatments, with the funds directed toward advancing a Phase II clinical trial of their lead candidate, vipoglanstat, for endometriosis. - learn more

LA Exits

  • Bandy Manufacturing, a Los Angeles-based provider of aerospace fasteners and components, has been acquired by Novaria Group to enhance its portfolio and expand its capabilities in the aerospace and defense industries. - learn more
  • Pangea, a company specializing in eco-friendly and sustainable products with a focus on innovative technology solutions, is being acquired by Nature's Miracle Holding Inc. to accelerate growth and capitalize on synergies in sustainability and tech-driven product development. - learn more
  • Notisphere, a healthcare communication platform streamlining recall and alert management, has been acquired by Par Excellence Systems to enhance its capabilities in delivering efficient supply chain solutions for the healthcare industry. - learn more
  • Cryogenic Machinery Corp., a North Hollywood, California-based manufacturer specializing in cryogenic pumps for industrial gas and energy applications, has been acquired by PSG, a Dover company, to enhance PSG's portfolio of specialized fluid handling solutions. - learn more

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The New Face of Live Shopping: Whatnot’s $5B Journey

🔦 Spotlight

Hello Los Angeles,

This week has been a challenging one for many in our city as we continue to face the aftermath of the recent wildfires. Recovery efforts are in full swing, and as always, the strength and resilience of our community shine through.

If you or someone you know has been impacted, there are resources available to help navigate this difficult time:

  • Pacific Palisades Fire Damage Maps: View here

These tools can provide support, whether you’re looking for financial assistance, housing resources, or updates on affected areas.

While our community focuses on recovery, we’re also reminded of what makes LA unique: its unrelenting drive to build, create, and innovate. A great example this week comes from Whatnot, the live shopping platform co-founded in 2019 by Grant LaFontaine and Logan Head, which has just achieved a major milestone.

Whatnot announced it raised $265 million in Series E funding, valuing the company at an impressive $5 billion.

For those unfamiliar, Whatnot combines shopping and entertainment through live-streamed auctions. Think of it as a vibrant, interactive marketplace where sellers showcase everything from trading cards and collectibles to fashion items, all in real time. Buyers can bid during the stream, creating a sense of excitement and connection that feels more personal than traditional online shopping.

The company’s new funding—co-led by Greycroft, DST Global, and Avra Capital—will drive expansion into markets like Australia and bring improvements to seller tools, from inventory management to advanced analytics. But what stands out most is Whatnot’s focus on its people. CEO Grant LaFontaine announced plans to buy back $72 million in shares for long-term employees, a move that underscores the company’s dedication to sharing its success.

As we move forward, let’s celebrate stories like these that show how innovation thrives in LA—even amid challenges. Whether it’s supporting wildfire recovery, building the next great startup, or simply connecting with others, we each play a role in shaping the spirit of our city.


🤝 Venture Deals

LA Companies

  • Phase Four, a leader in advanced in-space propulsion systems, announced the first close of its Series C funding round, securing nearly 60% of the target raise, led by Artemis Group Capital, to ramp up production of its Valkyrie Hall Effect Thrusters to at least 250 units annually and develop cutting-edge propulsion technologies for defense and national security needs. - learn more
  • Proper, a next-generation supplement brand launched by fitness entrepreneur Amanda Kloots, secured investment from Ben Bennett's Beauty Accelerator, The Center, to redefine the supplement industry with innovative, nutrient-focused wellness solutions tailored for modern lifestyles. - learn more
LA Venture Funds
  • Sound Ventures participated in a $17M funding round for Reshop, a platform simplifying the returns process for consumers and merchants, with plans to use the funds to enhance their technology and expand their services. - learn more
  • LFX Venture Partners participated in a $30M strategic funding round for Shippeo, a Paris-based company specializing in real-time multimodal supply chain transportation visibility; the funds will support Shippeo's global expansion, particularly across North America and the Asia-Pacific region. - learn more
  • Amboy Street Ventures participated in a $15M Series A+ funding round for Granata Bio, a biotechnology company focused on developing advanced gene therapies; the proceeds will be used to accelerate the development of their pipeline and expand their research capabilities. - learn more
  • BAM Ventures participated in a $700,000 seed funding round for MX Locker, an online marketplace for buying and selling motocross gear and parts; the company plans to use the proceeds to enhance its platform and expand its user base. - learn more
  • Crosscut Ventures participated in a $7.15M seed funding round for SoloPulse, an Atlanta-based company developing advanced radar technology; the funds will be used to enhance their product development and expand market reach. - learn more
  • Starburst Ventures participated in Loft Orbital’s $170M Series C funding round, bringing the San Francisco-based satellite infrastructure provider’s total capital raised to $280 million, with the funds aimed at accelerating their "condosat" missions to simplify and expand access to space. - learn more
  • Overture VC participated in a $100M Series B funding round for Harbinger, a Southern California-based electric vehicle company specializing in medium-duty EVs; the funds will be used to accelerate the production of their electric vehicle platforms. - learn more
  • Muse Capital and Time BioVentures participated in an $18M Series A funding round for Conceivable Life Sciences, a New York-based biotech company developing the world's first AI-powered automated IVF lab; the funds will support their ongoing commercial pilot program in Mexico City and preparations for a U.S. launch targeted for early 2026. - learn more
  • B Capital Group participated in a $25M Series B funding round for Labviva, a Boston-based AI-driven procurement platform for life sciences; the funds will be used to accelerate product development, enhance marketing and customer support, and expand internationally. - learn more
  • Focalpoint Partners participated in a seed funding round for Kerna Labs, a San Francisco-based AI biotechnology company focused on advancing mRNA payload design for new therapies, with the funds supporting operational expansion and development efforts. - learn more

LA Exits

  • Intracom Systems, a pioneer in software-based communication solutions, has been acquired by IPC, a global leader in trading communications technology, to enhance IPC's SaaS communications offerings for the financial services industry. - learn more
  • Adexa, a provider of advanced supply chain planning solutions, has been acquired by Eyelit Technologies to enhance its Manufacturing Operations Management (MOM) and Manufacturing Execution Systems (MES) offerings and expand its market presence. - learn more
  • Caramel, a platform specializing in simplifying online vehicle transactions, has been acquired by eBay to enhance its offerings for secure and streamlined automotive buying and selling experiences. - learn more
  • ImaginAb, a biotechnology company specializing in antibody-based imaging and therapeutic solutions, has been acquired by Telix Pharmaceuticals to expand its next-generation therapeutic assets and biologics technology platform. - learn more
  • Sleepypod, a global leader in crash-test-certified safety harnesses and carriers for pets, has been acquired by Paw Prosper to enhance its commitment to pet well-being and expand its portfolio of innovative pet safety solutions. - learn more

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Standing Together Through the Flames

🔦 Spotlight

To our Los Angeles family,

This week’s wildfires have brought immense pain and hardship to our beloved city. Many of our friends, neighbors, and colleagues have faced evacuations, power outages, and the devastating loss of homes and livelihoods. Our hearts go out to everyone affected by this tragedy.

At dot.LA, we want to express our deepest sympathy to those suffering in this moment. We see your resilience and stand with you during this challenging time. This community has always been defined by its strength and compassion, and now is the time to come together in support.

If You or Someone You Know Has Been Impacted, Resources Are Available:

Evacuation Shelters:

  • Calvary Community Church: 5495 Via Rocas, Westlake Village, CA 91362
  • Ritchie Valens Recreation Center: 10736 Laurel Canyon Blvd., Pacoima, CA 91331
  • Pan Pacific Recreational Center: 7600 Beverly Blvd., Los Angeles, CA 90036
  • Westwood Recreation Center: 1350 Sepulveda Blvd., Los Angeles, CA 90025
  • Pasadena Civic Auditorium: 300 East Green Street, Pasadena, CA 91101
  • Pomona Fairplex: 1101 W McKinley Ave, Pomona, CA 91768
  • Stoner Recreation Center: 1835 Stoner Ave, Los Angeles, CA 90025

Animal Shelters:

Small Animals:

  • Agoura Animal Care Center: 29525 Agoura Rd, Agoura Hills, CA 91301
  • Baldwin Park Animal Care Center: 4275 Elton St, Baldwin Park, CA 91706
  • Carson Animal Care Center: 216 W Victoria St, Gardena, CA 90248
  • Downey Animal Care Center: 11258 Garfield Ave, Downey, CA 90242
  • Lancaster Animal Care Center: 5210 W Ave I, Lancaster, CA 93536
  • Palmdale Animal Care Center: 38550 Sierra Hwy, Palmdale, CA 93550

Large Animals:

  • Pomona Fairplex: 1101 W McKinley Ave, Pomona
  • Industry Hills Expo: 16200 Temple Ave, City of Industry, CA 91744
  • Antelope Valley Fair: 2551 W Avenue H, Lancaster, CA 93536
  • Los Angeles Equestrian Center: 480 W Riverside Dr, Burbank, CA 91506
  • Pierce College Equestrian Center: 7100 El Rancho Dr, Woodland Hills, CA 91371

Disaster Relief Information:

  • LA County Assessor: Information for property owners and FAQs about disaster relief.

Mental Health Support:

  • Los Angeles County Department of Mental Health: Crisis counseling and support for those affected. Access services through their website or call their hotline at (800) 854-7771.

Temporary Housing Support:

  • Airbnb: In partnership with 211 LA, offering free temporary housing for displaced residents. Spaces are limited; complete the form to be notified of availability.

Transportation Support:

  • Uber: Use promo code WILDFIRE25 for 2 free rides up to $40 each to/from active shelters.
  • Lyft: Code CAFIRERELIEF25 offers 2 rides up to $25 each for up to 500 riders, valid until 1/15.
  • Metro: Fare collection is suspended systemwide.

Staying Informed:

  • Watch Duty App: Provides real-time wildfire tracking, evacuation warnings, and updates.
  • Los Angeles Fire Department Alerts: Visit their website for the latest information on fire status and safety guidelines.

Safety Precautions:

  • Ready, Set, Go!: Personal Wildfire Action Plan by the Los Angeles County Fire Department.

To those in our community who are volunteering, donating, or offering aid in any form—thank you. Your efforts embody the spirit of LA: strong, compassionate, and unstoppable.

At dot.LA, we’re committed to amplifying stories of resilience and support. If you’ve seen inspiring acts of kindness or have resources to share, please let us know. Together, we can shine a light on the incredible ways this community is stepping up during these trying times.

In the days ahead, let’s hold tight to the bonds that unite us and remember that we are stronger together. The fires may scar the land, but they cannot dim the collective spirit of Los Angeles.

We’re here for you, and we’re with you.

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