How I’m Lowering My CAC Using AI + Creative Testing

What's up, Marketers! This is Aazar.

This newsletter is about leveling up your paid growth marketing skills by analyzing the best brands' paid strategy, tactics, positioning, and value props.

This newsletter is divided into:

• Sharing what I've learned (this issue)

• Sometimes sharing some other performance marketers’ lessons with you

• And I analyze & compare the best ads on the internet

BEST LINKS OF THE WEEK (on popular demand)

My favorite finds

• How I helped this client get from zero to $1.3M in 7 months

• Good format to steal

• I fired my ad creative agency. How I fixed it.

• True Classic test that won

• Great case study when you stop adding value in your customers life

• Swipe this founder ad that landed in my feed

• Sora 2 is wild

How to Develop a Creative Strategy in Under 30 Minutes

Creative strategy used to take hours of research, brainstorming, and guesswork. Now, AI makes it possible to go from zero to testing-ready concepts in under 30 minutes.

It’s not about replacing your instincts, taste and judgement. It’s about speeding up every step of the process: research, messaging, angles, and formats.

In this breakdown, I’ll show you exactly how I use AI to build a data-backed creative strategy that lowers CAC and CPL while improving ROAS. The same framework we use across brands spending from $50K to $500K/month on Meta.

By the end, you’ll have a repeatable system to combine AI + creative testing to engineer lower CACs systematically.

(Bookmark today’s edition so you don’t lose the AI prompts I’m about to share).

Let’s get into it.

Step 1: Customer Research & Review Mining

Most brands skip this part and go straight into ad creation. That’s why their creatives flop.

If you want ads that lower CAC, you need to start with what customers actually say, not what you think they say.

Where to dig:

• Reddit threads — People rant here without filters. Look for phrases like “I wish there was a product that…” or “I tried X but it…”.

• Trustpilot, G2, or App Store reviews — You’ll find the good, the bad, and the “I almost didn’t buy because…” insights.

• Amazon reviews — even if it’s a competitor’s product, you can see what people love and what drives them crazy.

• YouTube comments — When people watch reviews or tutorials, their comments reveal hesitations and hidden desires.

• Niche forums / Facebook groups — Highly specific problems and language show up here.

What you’re looking for:

• Pain points → what frustrates them?

• Objections → what stops them from buying?

• Desires → what outcome excites them?

• Language → the exact words they use (this is gold for ad copy).

Example: If you were selling sleep earplugs, review mining might reveal patterns like:

• “I can’t focus in noisy cafés.”

• “Finally, I can sleep while traveling.”

• “I didn’t buy at first because they looked uncomfortable.”

That’s three ad angles right there: focus/productivity, travel, and comfort.

The mistake people make is treating review mining as “research notes.”
Instead, treat it as a library of ad hooks. Every line you pull out is potentially a headline, a script opener, or a testimonial-style creative.

Here is the prompt for this step:

• Mega AI Prompt to use reviews and find strong ad angles.

Step 2: Talk to Sales/Support (or Listen to Calls)

This is where people get real. They ask the questions they’re too embarrassed to post online. They reveal the tiny doubts that stall a purchase. And give you the exact words.

Why this matters:

• Sales calls surface objections in real time.

• They reveal triggers — the moment a prospect flips from “maybe” to “yes.”

• They show you patterns across different types of customers.

If you’re running ads for your own brand → talk to your sales or support team.
If you’re working with a client → push to get their sales recordings.

What to look for:

• Top objections: too expensive, not sure it works for me, I tried something similar before.

• Buying signals: “How soon can I start?” “Does it work if I [specific use case]?”

• Unexpected language: the words customers use often aren’t the ones you’d write in an ad. Sometimes, the exact messy phrasing from a call makes the best hook.

Example:
A skincare brand’s sales calls might reveal lines like:

• “I’ve wasted money on creams that did nothing.” → Ad angle: “Stop wasting money on skincare that doesn’t work.”

• “I don’t want to look like I’m wearing makeup.” → Ad angle: “Look natural, without the heavy cover-ups.”

This is why sales calls are gold. They don’t just give you “content ideas.” They give you conversion-ready messaging straight from your customer’s mouth.

Here is the prompt for this step:

• Prompt to use your sales calls and find insights that actually convert prospects.

Step 3: Demographics, Psychographics & Lifestyles

Here’s the trap most advertisers fall into:

They stop at demographics. “Our target is women, 25–40, living in cities, with disposable income.”

That’s not a creative strategy. That’s just a persona.

If you want to lower CAC, you need to go deeper:

• Demographics → basics like age, gender, income, location.

• Psychographics → motivations, values, and identities. What do they believe about themselves?

• Lifestyles & verticals → specific settings where your product shows up in their life.

Example: ALO Yoga

ALO isn’t just “yoga wear.”

• Demographic view: women 22–38, fitness-focused.

• Psychographic view: they want to look stylish and feel like part of a wellness community.

• Lifestyle view: gym → sauna → beach → brunch. Same product, 4 completely different creative angles.

Example: Loop Earplugs

Loop nailed this with micro-targeting. They didn’t run one generic “better earplugs” campaign. Instead, they sliced the audience into:

• Parents who want quiet at home.

• ADHD community struggling with focus.

• Festival-goers who want music without ringing ears.

• Office workers stressed by distractions.

• Frequent travelers who can’t sleep on planes.

Each of those angles are use-case-based storytelling.

Why this works:

• It makes your product feel tailor-made for someone’s exact problem.

• It multiplies your ad angles. One product suddenly has 10–15 unique use cases to test.

• It helps you reach micro-tribes that respond to personalized language, lowering CAC.

If you stop at demographics, your ads sound generic.

If you dig into psychographics and lifestyles, your ads feel personal.

Here is the prompt for this step:

• Dig deeper into demographics, psychographics, and different lifestyles, and find different ad angles and micro-targeting opportunities. 

Bonus: Use Atria to spy on the personas, emotions, and desires your competitors are targeting.

Thanks to our partners who support this newsletter.

Step 4: Build a Messaging Canvas

Research without structure is just a messy Google Doc.

You need a way to translate customer insights into clear messaging pillars you can test across creatives.

That’s where the Messaging Canvas comes in.

I like to break it into 6 buckets (and for this section, I’ll use Loop Earplugs as the example):

1. Audience profile-based → Who this is for

   • “For parents who can’t get a full night’s sleep.”

2. Outcomes → What they’ll achieve

   • “Sleep peacefully anywhere.”

3. Benefits & futures → What life looks like after

   • “Wake up fresh, not drained.”

4. Jobs to be done / use cases → Practical contexts

   • “Study in a noisy café.” “Focus during deep work.”

5. Pain points → Frustrations you’re solving

   • “Tired of thin walls and loud neighbors?”

6. Selfish unspoken desires → The stuff customers don’t say out loud

   • “Look stylish while wearing earplugs.”

   • “Be the person who is always focused.”

Notice how one product (Loop) gives you dozens of different ad angles once you run it through the canvas.

Most brands stop at “benefits.” But it’s often the selfish, unspoken desires that create the lowest CAC ads, because they tap into the emotion behind the purchase.

We made something similar for The Perfect Jean Brand once we went through the audit.

Here are the prompts for this step:

• Messaging Canvas Prompt - Find a strong idea for all 6 different bucks

• Angle Expander Prompt to find ideas in any specific bucket to go deeper

• Go from ad angle to headlines prompt (Proven templates)

Step 5: Ad Formats & Creative Angles

Once you know what to say, the next step is deciding how to say it.

This is where creative testing really makes or breaks CAC.

The goal isn’t to make one perfect ad.

It’s to build a range of formats and angles so you can see what resonates fastest and scale the winners.

Here are the core formats to test for static:

• Us vs Them

• Founder ads

• Press screenshot ads

• Old vs New

• UX familiarity ads

• Before & After

• Stats grid

• Testimonial ads

• Meme ads

For video formats, rotate through:

• Skits

• Tutorials

• Founder story

• Myth-busting

• Podcast-style

• Comedy

• Exaggeration

• Video Sales Letters (VSL)

The point: one message can live across multiple formats. That’s how you multiply your testing power without reinventing the wheel.

Creative fatigue sets in when you test one idea in one format. You lower CAC when you test multiple ideas in multiple formats.

Here are the prompts for this step:

• Ad Formats & Creative Angles Prompt (Static Only + Ad Matrix)

• Entertaining Video Ad Script Generator Prompt (6 Frameworks)

• Universal Video Ad Script Prompt (10 Formats)

• Storytelling Video Ad Script Generator Prompt (4 Formats)

• Viral Video Ad Script Generator Prompt (4 Formats)

Step 6: Offers That Cut CAC Further

Strong creative lowers CAC.

But strong offers push it down even more.

The reality is:

• Ads get people interested.

• Offers get them to take action.

You don’t always need a massive discount. Small, smart tweaks in the offer can change the conversion math completely.

Some proven levers to test:

• Bundles (“Buy 2, get 1 free”)

• Limited-time discounts

• Coupons for referrals or first purchase

• Free trial extensions or bonus add-ons

• “Buy more, save more” pricing tiers

The key: your offer should feel valuable without destroying your margins.
When paired with the right creative, even a simple offer can tip the scales and drive down CAC.

Here is the prompt for this step (Inspired by Alex Hormozi’s $100 Million Offers):

• Offer Design Prompt (Cut CAC Without Killing Margin)

The Formula

At the end of the day, lowering CAC is about running a systematic process.

The formula looks like this:

Lower CAC = Right Message × Multiple Formats × Strong Offer

AI doesn’t replace strategy.

But it makes the whole system faster and sharper:

• Research that once took weeks now takes hours.

• Messaging variations that used to burn out your copywriter can be generated in minutes.

• Testing multiple ad formats is no longer a bandwidth problem.

When you run this process consistently, you stop guessing. You stop chasing “one-hit-wonder” creatives.

And you start engineering ads that keep scaling while CAC goes down.

That’s how you win.

Happy Growing with Paid Social,

Aazar Shad

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