Ep 632: SheFit on TikTok Shop's Hidden Costs and Why Your New Customer Numbers Are Wrong
DTC Podcast · with Melissa Dusendang · July 27, 2026 · 41 min
Summary
Melissa Dusendang, a key figure at SheFit, reveals how businesses can unknowingly deceive themselves with skewed data, particularly when it comes to new versus returning customer metrics on platforms like TikTok Shop. She provides actionable strategies for e-commerce operators to ensure data integrity, optimize attribution models, and leverage customer insights for both marketing and product development, ultimately protecting brand margins and fostering sustainable growth.
Key takeaways
TikTok Shop and similar marketplaces can distort new vs. returning customer data because of masked emails; always audit your metrics to distinguish genuine new customers from repeat buyers using marketplace discounts.
Before analyzing ROAS or MER, establish a clear, shared attribution framework across marketing and finance teams to prevent internal disputes and ensure consistent measurement.
Mine customer reviews and comments for authentic language and pain points – these often make the most effective ad copy and can directly inform impactful product improvements, as seen with SheFit's Emerge Sports Bra.
Leverage micro-influencers and brand ambassadors to showcase the 'aha moment' of your product, as this can be a highly effective and cost-efficient new customer acquisition strategy.
Carefully evaluate marketplace platforms like TikTok Shop; while they offer reach, they can erode margins and dilute a premium brand's 'always on sale' perception. Understand their true cost beyond just ad spend.
Subscribe to DTC Newsletter - https://dtcnews.link/signupMelissa Dusendang ran a summer contract at SheFit to "manage the chaos" for one marketing director. She never left. Years later she runs ecommerce and operations, and her actual job is stopping the company from lying to itself with its own data.If you own the P&L, the dashboard, or the customer experience, this one is for you. Melissa sits in the finance meeting thinking about how a tax decision hits checkout, and in the marketing meeting thinking about which numbers are secretly inflated. She calls it being a puzzle person. Eric calls her a silo obliterator.Why TikTok Shop can quietly wreck your new-versus-returning customer math. Masked and missing emails on marketplace orders mean Shopify can count repeat buyers as new, so "we 2x'd new customers" can really mean you gave existing customers a discount.The attribution question to ask before anyone reports a ROAS or MER number, so two teams aren't arguing about goals while measuring different things.How SheFit found its best-selling ad hooks inside customer reviews and comments, and why phrases like "my boobs don't move" outperform copy the team writes.The Emerge Sports Bra story: how customer comments drove a custom-strap design (skinny straps on smaller sizes, wider straps on larger sizes) that sold out on launch.Why real women feeling the "aha moment" when they lift the straps is SheFit's top new-customer acquisition move, run through micro-influencers and ambassadors instead of a gym-only ad.Her honest read on TikTok Shop: better customer control than Amazon, but a margin eroder that can turn a premium brand into a "always on sale" brand.Who this is for: Ecommerce and ops leade
What does this episode say about analytics & attribution?
TikTok Shop and similar marketplaces can distort new vs. returning customer data because of masked emails; always audit your metrics to distinguish genuine new customers from repeat buyers using marketplace discounts.
What does this episode say about dtc strategy?
Before analyzing ROAS or MER, establish a clear, shared attribution framework across marketing and finance teams to prevent internal disputes and ensure consistent measurement.
What does this episode say about brand & content?
Mine customer reviews and comments for authentic language and pain points – these often make the most effective ad copy and can directly inform impactful product improvements, as seen with SheFit's Emerge Sports Bra.
What does this episode say about amazon & marketplaces?
Leverage micro-influencers and brand ambassadors to showcase the 'aha moment' of your product, as this can be a highly effective and cost-efficient new customer acquisition strategy.
What does this episode say about analytics & attribution?
Carefully evaluate marketplace platforms like TikTok Shop; while they offer reach, they can erode margins and dilute a premium brand's 'always on sale' perception. Understand their true cost beyond just ad spend.
