When custom comments look fake, it's almost always the writing, not the accounts. Generic praise, identical structures, and hashtags no real person would use give it away faster than anything. Here's how to write a set that holds up.
Three formulas that do work
1. The Objection Buster — e-commerce and products
Voice the hesitations a real buyer has, so your brand account can answer them in the thread where every future visitor will see it:
- "Does this run true to size or should I go up one?"
- "How long is delivery to the UK usually?"
- "Is the material stiff or does it soften after a wash?"
2. The Immediate Win — coaching, courses, SaaS
Show a specific result rather than vague praise:
- "Used tip #2 yesterday and booked two calls off it 🔥"
- "This 90-second breakdown was clearer than the course I paid for last month"
3. Creative Curiosity — creators and videographers
Ask about technique; it invites more real replies:
- "That cut at 0:14 — are you doing that in Premiere or CapCut?"
- "What lens is this? The compression looks unreal"
The four failure modes
| Failure | What it looks like | Fix |
|---|---|---|
| Uniform shape | Every line is a short exclamation with one emoji | Vary length, punctuation, emoji use across the set |
| Empty praise | "amazing", "love this", "so good" × 15 | Reference something specific in the post; ask real questions |
| Brand voice everywhere | Every comment sounds like the marketing team wrote it | Write as a range of different customers, not one |
| Reused verbatim | The same lines appear on three posts word for word | Rework the set for each post — it's a content signature otherwise |
Swipe table by niche
| Niche | What real commenters say | Example |
|---|---|---|
| Fashion / DTC | Fit, fabric, styling | "The drape on this is so good. Does it come in black?" |
| Fitness / coaching | Form, programming, results | "Best cue for hip drive I've heard, trying this today" |
| Local business | Location, hours, booking | "Is the weekend patio first-come or can you book?" |
| Lifestyle creator | Aesthetic, mood, place | "Where is this? The light is incredible" |
Never submit twenty comments with the same shape. Mix one-word reactions ("Obsessed"), short enthusiasm ("this colourway is unreal"), and full-sentence questions. Different lengths, different punctuation, different emoji — or no emoji. Uniformity is the tell.
A rough length distribution
For a set of 15 lines, aim for something like: 3–4 very short (one to three words or a single emoji), 6–7 medium (a short sentence), 4–5 longer (a full question or a two-clause observation). That spread mirrors how a real comment section fills up — a few drive-by reactions, a core of engaged responses, a handful of people who wrote a proper question.
A worked example: 15 lines for a skincare serum post
- Wait this is the one everyone's been posting about right
- Does it sting if you have sensitive skin? 👀
- Been using mine for 3 weeks, texture difference is real
- Is this fragrance free?
- ok the before/after in your stories sold me
- How many drops per use
- Does it pill under sunscreen
- finally a serum that doesn't smell like nothing OR too much
- Restocking when?? sold out last time
- Can you layer this with retinol or is that too much
- the packaging 😭 so clean
- Is it safe while pregnant
- 2 months in. would repurchase.
- Shipping to Canada available?
- does a little go a long way or am I burning through it
Notice the mix: three or four are pure reactions, most are questions a real buyer asks, lengths vary, only two use emoji, and none of them say "great product." The brand account replies to the questions — and now the comment section answers objections for every visitor who lands there later.
Dos and don'ts
| Do | Don't |
|---|---|
| Reference something specific in the image or video | Write "amazing post" ten times |
| Vary length from one word to a full sentence | Use the identical emoji on every line |
| Ask questions a customer would actually ask | @-mention your own account repeatedly |
| Leave some lines with no emoji at all | Stuff in hashtags no commenter would use |
| Let a few be slightly negative-leaning ("does it pill?") | Make all fifteen glowing |
Adapting a set across posts
You will reuse the same objections — sizing, shipping — on many posts. Change the wording each time: "true to size?" becomes "should I size up?" becomes "how does the fit run?". Swap the reactions to match the new image. The questions can be the same in substance; they cannot be the same in text, because verbatim repetition across posts is one of the patterns filters look for.
Where auto-written beats custom
On a routine post where you just want the section active, auto-written comments are varied by default and cost you no time. Custom text earns its keep on posts where a specific question needs raising and answering — launches, ads, product posts. Write the 10–20 lines that carry meaning and let auto-written comments fill the rest; a section that is 100% scripted is harder to keep varied than a scripted core plus natural filler.
FAQ
Q How many custom comments should I write?
Enough to cover the questions and points you want raised — usually 10–20. Auto-written comments can make up the rest of the quantity.
Q Can I reuse a comment list on another post?
Better not to verbatim — the same lines appearing word-for-word across posts is a content signature. Rework them.
Q Should comments mention my brand name?
One or two naturally ("been a [brand] customer for a year") is fine. Every comment naming the brand is not how real people comment.
Q Do emojis help or hurt?
Used sparingly and varied, they read as normal. The same emoji on every line, or a five-emoji string on every line, is a tell.
Q What's the fastest way to check a set before submitting?
Read it as a stranger. If more than a couple of lines could be swapped between any two of your posts unchanged, it's too generic.
Q Should any comments be negative?
Slightly hesitant, not negative — "does it pill?", "is it worth the price?". A real section has a few of these, and your answers handle them.