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Masters of ScaleHow The Flex Company disrupted menstrual care (with founder & CEO Lauren Wang) | Masters of Scale
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Chapter summaries
From searching for a CEO to deciding to lead Flex herself
Lauren Wang describes how she initially told everyone about her menstrual-product idea while looking for someone else to be CEO. A conversation on a run with a friend—who encouraged her to apply for a female CEO role—became the turning point that made her commit to building “the period thing” herself.
- •Lauren shares she originally planned to be CMO while recruiting a CEO
- •A friend’s encouragement reframes her confidence about leading
- •She decides in-the-moment to pursue the company herself
- •The host frames Flex as a disruption in an industry long overdue for change
Personal health struggles reveal a neglected product category
Lauren explains that for 15 years she got infections every month and didn’t connect it to tampons until a nurse practitioner refused to prescribe more medication unless she stopped using them. The host and Lauren set up the problem: traditional options felt limited, yet menstrual products hadn’t meaningfully evolved for decades.
- •Lauren recounts monthly infections associated with tampon use
- •A nurse practitioner forces a change by refusing further prescriptions unless she stops tampons
- •The host underscores how limited the mainstream options were at the time
- •Lauren’s frustration becomes the seed for a bigger investigation into the category
Discovering menstrual cups and the broader period-access context
At a dinner, Lauren learns about menstrual cups from women who had switched and is intrigued by the claims of long wear time and sustainability. The host also connects the conversation to period-product access issues globally and in the U.S., which Lauren confirms as a serious problem.
- •Lauren hears about menstrual cups for the first time at a dinner in 2013
- •The discussion sparks curiosity that grows into a serious time-consuming “hobby”
- •The host raises period-product access limiting school/work participation; Lauren agrees it’s significant
- •Lauren references a recent study discussed in the episode about affordability/access across income levels
Research rabbit hole: stigma, lack of innovation, and lack of information
Lauren describes trying to find research explaining her infections and being dismissed by doctors, finding little beyond older toxic shock syndrome information. She concludes the space lacked meaningful innovation for nearly 100 years, and argues stigma and economics kept products like cups from mainstream adoption and limited research and media coverage.
- •Lauren describes doctors dismissing her concerns and blaming her body
- •She finds limited research beyond older toxic shock syndrome studies
- •She concludes menstrual product innovation had stagnated for nearly a century
- •She attributes slow adoption and limited research to stigma, poor incentives for reusable products, and lack of open discussion
- •She cites an example of media stigma: an editorial policy not to write about periods
Turning curiosity into a plan: asking for help with specific, time-bound requests
As a marketer without product-development experience, Lauren builds organized lists of what she doesn’t know and who might help. She explains how sending highly specific asks to her network unlocked introductions and deep support, and the host highlights why specificity outperforms vague “pick your brain” requests.
- •Lauren creates structured notes by knowledge gaps (product, regulatory, finance, manufacturing, supply chain)
- •She inventories her network and sends emails with clear, narrow requests
- •She emphasizes specific and time-bound asks as a “hack” that makes people more willing to help
- •The host contrasts specific requests with generic networking outreach
Overcoming self-doubt: choosing to go all-in for moral reasons
Lauren reveals she didn’t want to be CEO and describes how mentors reinforced her self-doubt, leading her to ask prominent male executives to run the company—only to be told she was capable. She explains leaving her job came from believing the risk of not trying was worse than failing, rooted in a strong sense of service and moral imperative.
- •Lauren shares she initially didn’t believe she could be CEO
- •Trusted professional contacts warned her she was making a mistake and suggested a more conventional path
- •She asked two male executives to be CEO; they told her she was capable
- •She chose to quit her job because not trying felt like the bigger risk
- •She ties her motivation to a desire to help others and a moral imperative to commit fully
What the period disc is—and why it’s different
Lauren explains the period disc’s placement in the body compared with tampons and cups, and why that affects comfort. She outlines core product benefits: long wear time, high capacity, self-emptying during urination, and fewer products needed per day, plus a reusable option. She also notes an early viral driver: the ability to have “mess-free” intimacy.
- •The disc sits farther back around the cervix rather than in the vaginal canal
- •She claims it can be worn up to 12 hours and holds the equivalent of five super tampons
- •She describes “self-emptying” when peeing, reducing the need to remove it frequently
- •Disposable use pattern: about two discs per day; reusable version requires less frequent removal
- •She says virality was driven in part by “mess-free” oral or penetrative sex
Funding a hardware-like product: the chicken-and-egg of proving demand
Lauren explains that building the first disc required over a million dollars due to custom manufacturing needs, yet investors wanted proof people would buy it before it existed. She recounts running out of money, taking drastic personal measures, and cashing out her 401(k) despite warnings, just to keep moving.
- •She describes the high upfront costs of custom manufacturing and machinery for a patented product
- •Investors demanded proof of demand before the product could be produced
- •She characterizes it as a chicken-and-egg problem founders must solve
- •She recounts financial strain: moving in with her boyfriend and illegally AirBnB-ing her apartment, nearly getting evicted
- •She cashes out her 401(k) despite being warned about taxes and long-term consequences
Y Combinator validation and “do things that don’t scale” traction hacks
Lauren gets into Y Combinator and pitches Sam Altman, who expresses belief in the opportunity and in her. She shares a vivid example of doing things that don’t scale: transporting large quantities of product to Europe and mailing them locally to build traction while awaiting U.S. FDA clearance.
- •Lauren interviews with Sam Altman and describes his vote of confidence
- •She names the key YC lesson as doing things that don’t scale early
- •She had a waitlist but couldn’t mail product broadly in the U.S. before FDA clearance
- •She describes traveling with tens of thousands of discs and telling customs they were “friendship bracelets”
- •The effort generated enough traction to support momentum heading into Demo Day
Demo Day shock value and investor rush
Lauren describes being placed early in the Demo Day lineup and facing a surprised audience reaction. After the pitch, she recounts being mobbed at her booth, using an anatomical model to explain the product, and receiving intense investor interest immediately afterward.
- •She is scheduled second on stage among nearly 100 companies
- •She recalls gasps from the audience and uncertainty about investor reactions
- •She sets up a booth with an anatomical model for explanation
- •She describes investors rushing the hall and crowding her table
- •The host and Lauren discuss whether reactions were taboo shock, market realization, or both
From D2C growth to retail reality: marketing engine and customer urgency
Lauren explains Flex launched direct-to-consumer in 2016 during a period when paid social could be highly efficient, but it was hard to hire talent and build a repeatable marketing engine. She also shares a key learning from customers: many didn’t want to wait for shipping and preferred buying period products during routine store trips.
- •Flex launches D2C in 2016 while online ad economics were favorable
- •Lauren notes the challenge of hiring people skilled at performance marketing
- •She shares early revenue success alongside the lack of a scalable, repeatable marketing engine
- •Customer feedback highlights a core behavior: periods arrive unexpectedly and customers don’t want to wait for delivery
- •She identifies retail availability as essential to meet how people actually shop for period care
Retail nearly breaks the company: cash-flow gaps, production issues, and financing constraints
As Flex pushes into retail, Lauren explains how retailer payment terms and manufacturing costs created intense cash-flow pressure. She recounts a near-crisis triggered by an unexpectedly huge order combined with manufacturing tooling failures, and how banks demanded personal guarantees she couldn’t provide—until the company eventually found a non-traditional lender.
- •She describes the difficulty of operating D2C and retail business models simultaneously
- •Retail payment terms (e.g., 90 days) clash with upfront manufacturing costs
- •A major retailer placed an initial order three times larger than expected due to a new buyer
- •A breaking tool on the manufacturing line created production problems during the surge
- •Banks required personal guarantees; she rejects them due to lack of personal assets
- •She says a non-traditional lender eventually helped them get past the hump
Brand voice and growth tailwinds: authentic marketing without fear-mongering
Lauren explains she intentionally built a brand that communicates benefits rather than attacking tampons, emphasizing personal choice and sensitivity around intimate health decisions. She describes skepticism from some investors about mass-market adoption, then points to strong performance and new growth drivers: improved ad creative, heightened public concern after a study about tampon testing, and low awareness of discs creating top-of-funnel opportunity.
- •Lauren says Flex avoided fear-based messaging and didn’t want customers to feel judged
- •She emphasizes authenticity, trust, and creating a welcoming space in the brand voice
- •She recounts investor skepticism that discs were too niche for “mainstream America” and her view that people underestimate women
- •She reports the company is having its best year ever across revenue and profitability metrics
- •She links growth to improved ad creative and increased public attention after a study discussed in the episode about toxic metalloids in tampons
- •She notes discs remain little-known and cites 3% awareness in the U.S., prompting focus on top-of-funnel investment
Creator-led ads, new products, and the next stage of scale
Lauren says ads featuring her perform best, even though being on camera takes time away from running the company, and she describes building a more structured creative process to expand beyond “bread and butter” performance. She closes by previewing new products, deeper joint planning with retail partners, a desire to expand internationally, and the need for more capital—while staying focused on U.S. growth.
- •Lauren says ads featuring her outperform others and shares an example narrative about a heavy-period embarrassment at work
- •She describes not loving being on camera but doing it because it works
- •She says Flex developed a more scientific and structured creative process to test new concepts while protecting performance
- •She previews new products planned for next year and stronger strategic collaboration with retailers
- •She identifies international expansion as important and expresses concern about how many people could benefit but don’t know or can’t access the products
- •She anticipates needing more capital while prioritizing scaling in the U.S. for now
