A successful OEM project usually comes down to one thing: how prepared you are before the factory starts sampling. If your inputs are clear, you get accurate quotes, faster samples and fewer revisions.
If your inputs are vague, you'll still get samples, but the timeline delays, costs continue to rise, and decisions get made too late (often after packaging is already printed).
For South American brands, the risks are higher because heat, humidity, and long shipping routes can expose formula and packaging weaknesses quickly.
Below is a practical pre-production checklist you can use before you send your first message to an OEM.
First, summarize the product positioning in one sentence. It keeps you focused and helps the OEM propose the right base system.
Example:
"This is a lightweight daily facial moisturizer built for oily to combination skin that needs hydration without shine in warm, humid weather."
Then lock in 1–2 hero outcomes you want to lead with. Avoid trying to do everything in one SKU (brightening + anti-aging + acne control + soothing + barrier repair). That's how formulas become expensive, unstable, or underwhelming.
Based on our experience, brands that launch on time have clear product direction. And developed their first product into a sales-driven product that can be repeatedly sold.
Also decide your first lineup size. If you're not sure about demand, start with 1–3 SKUs. Every extra variant adds sampling cycles, packaging work, and MOQ complexity.
A structured brief to the OEM that they can quote accurately and avoid rework.
Here's what actually worked for buyers who want predictable outcomes: use an OEM brief with fields the factory can actually work with.
Copy/paste OEM brief template
This brief does two things: it reduces misunderstanding and gives you leverage later because you have a written baseline.
OEM work isn't slow. Decision-making is slow. If your team needs two weeks to respond to each sample, the project will crawl.
Before you start, define four sign-off checkpoints:
1. Formula direction approved (texture, odor, appearance, cost range)
2. Packaging approved (type, material, size, decoration approach)
3. Label + claims approved (final text locked)
4. Pre-production golden sample approved (your reference for bulk)
Set one internal rule that saves weeks: name a decision owner who can respond within 48–72 hours for sampling feedback and approvals.
We've seen this fail when the brand waits for everyone’s opinion on every round. The lab can adjust quickly, but only if your feedback is fast and consistent.
Don't wait until after three sampling rounds to discover the factory can’t handle your packaging, or doesn't have real QC controls.
Capability match checklist
Ask the OEM:
Ask for an "evidence chain," not just certificates
Request:
These are practical proof points. A factory that can provide them is usually operating with real process discipline.
For a step-by-step list of QC evidence to request (COA, spec sheets, batch records, golden samples), read our guide on how brands can validate OEM product quality before production.
Your real goal is to confirm the formula can be repeated and will behave well in your chosen packaging.
Use a sample evaluation sheet
Include:
Use version control from day one
Ask for:
This prevents the classic problem: sample is one thing, bulk becomes another.
Choose a testing plan by risk level
If you sell into warm, humid climates or plan long-distance shipping, stability and compatibility are risk control.
Decide early whether you want stock packaging or custom packaging.
Stock vs custom packaging
Also treat packaging as functional, not just pretty:
If you're still deciding between jars, tubes, pumps, or airless bottles, our packaging options guide breaks down what each format is best for and what to watch out for.
Artwork readiness checklist
Label work becomes painful when it happens late. Before you finalize design, lock the inputs:
Then set a rule for claims: only claim what the formula and testing can support. Over-claiming causes last-minute label rewrites and can create real compliance risk.
A professional OEM relationship is not only about the formula. Prepare your commercial assumptions up front.
Cost drivers you should understand
Incoterms and landed cost planning
Confirm what your quote includes:
For South American buyers, shipping time and storage conditions can be unpredictable. Build a buffer.
Before you pay for custom work, clarify ownership:
Also define change control:
These conversations feel uncomfortable, but they prevent bigger conflicts later.
If you want to shorten the timeline safely, focus on two things: a strong brief and fast approvals. Everything else becomes easier.