For years, marketers treated TikTok comments as vanity engagement. In 2026, TikTok itself ended that debate: user comments are the highest predictor of a first purchase on the platform. That's not an agency theory — it comes from Donte Murry, TikTok's ads group vertical director for beauty and wellness, speaking to Glossy in May 2026.
The comment section is now the review page, the FAQ, and the trust check rolled into one. This guide covers what the data says — and a concrete workflow to export your comments and reverse-engineer them into first purchases.
What the 2026 data says
- Comments predict first purchases; education predicts repeat purchases. Per TikTok's Murry, user comments are the top predictor of an initial buy, while ingredient- and science-focused educational content drives repeat purchases.
- 77% of users search for a product they just saw to learn more before buying — and the comment section is the first thing they read when they land back on the video.
- TikTok Shop's health & beauty sales are up 84% year over year, with $4.4B in lifetime category sales — making TikTok Shop the #4 health and beauty e-commerce retailer in the US.
- Roughly 1 in 10 Americans has bought through TikTok Shop, spending an average of $118 a year across 3–4 purchases.
Murry's advice to brands was blunt: "think about what you want to reverse engineer in the comments." You can't reverse-engineer what you haven't read — and nobody reads 20,000 comments in the app.
Why comments beat ads for the first purchase
A first-time buyer doesn't trust your ad — they trust the 400 strangers under it. Before checkout, shoppers scan comments for three things: proof it works ("repurchased 3 times"), proof it's real (no scam/fake complaints), and answers to their exact objection (shade match, shipping time, sizing). If the answer isn't there, they scroll on. That's why the comment section — not the caption — decides the first sale.
The reverse-engineering workflow
- Export the comments. Paste your video (or a competitor's) into the TikTok comment exporter — first 100 comments free, no signup. You get a CSV/Excel with username, comment text, likes, timestamp, and replies.
- Rank by likes. The most-liked comments are the objections and praises the whole audience agrees with. A liked question is a question hundreds of buyers share.
- Split questions from proof. Filter for "?" — every unanswered question is a stalled purchase. Pin the best social-proof comment, and answer the top three questions in replies or your next video's first five seconds.
- Tag purchase intent with AI. On large videos, run AI sentiment and purchase-intent analysis to get every comment tagged as buying signal, question, objection, or complaint — a ranked to-do list instead of a wall of text.
- Seed what's missing. If your comment section lacks the proof buyers look for, ask for it: "comment your skin type + results" turns customers into your conversion copy. That's the reverse-engineering Murry is talking about.
Do the same to competitors
Export a competing product's viral video and read what their buyers ask that never gets answered — shipping worries, authenticity doubts, missing shades or sizes. Each gap is a ready-made hook for your next video or ad. See the full competitor comment analysis guide.
What it costs
The first 100 comments of any video are free — no signup, no card. Bigger videos are $1 per 100 comments, a 3-day unlimited pass is $14 one-time, and the $39 pass adds AI sentiment and purchase-intent tagging. No subscription.
Start with your most-commented video: paste it into the exporter and read what your next thousand first-time buyers are reading right now.