How to Provide a Sample to a Chemist for Product Development

1 day ago
3 min read

Most product delays don’t happen in the lab. They happen before formulation even starts.

If you show up to a chemist with just an idea and no references, expect multiple revisions, longer timelines, and a result that doesn’t quite match what you had in mind.

A chemist can’t formulate from a concept alone. They formulate from direction. If you’re new to the process, cosmetic formulation basics breaks down what actually goes into building a professional formula.

If you’re serious about creating a custom beauty product formula, you should prepare a benchmark.

Benchmark Sample A benchmark is simply a sample of an existing product that you provide for reference. We use it to understand the texture, viscosity, and overall feel you’re aiming for, whether that’s for reverse engineering or for aligning a new formula to match your preferred performance. It serves as a guide so we can get as close as possible to the look, feel, and behavior you want in the final product.

The Sample Prep Method: What to Bring to Your Chemist

At Freelance Formulations, we see the same gap over and over. Founders have a vision, but not the materials to communicate it clearly.

The easiest way to fix that is to follow a simple structure when preparing your product.

1. A Physical Product Reference

Bring at least 1–3 products that feel close to what you want.

This is the fastest way to communicate:

texture (gel, cream, oil, serum)
thickness and spreadability
absorption speed
finish on the skin (matte, dewy, tacky)

For example: If you like a lightweight antioxidant serum, you might reference something like SkinCeuticals C E Ferulic for its watery feel and fast absorption.

If you want something richer and more occlusive, a classic like Nivea Creme shows thickness and barrier-style hydration.

Saying “I want something hydrating but not heavy” is subjective. Handing over a product removes the guesswork.

2. Clear Product Comparisons

One reference isn’t always enough. What matters just as much is what you don’t want.

This is where comparisons help:

“Lighter than this cream, but more nourishing than this gel”
“Absorbs faster than this oil, but still leaves a glow”

These contrasts give your chemist a range to work within, which is critical in custom skincare formulation.

3. Defined Product Goals

Before development starts, you should be able to clearly answer:

What is the primary purpose of this product?
Who is it for?
When and how is it used?
Is it tied to a treatment or service?

For example: A daily retail moisturizer and a post-procedure recovery cream may both be “hydrating,” but they require completely different formulation approaches.

Your goals drive everything from ingredient selection to texture to stability.

4. The “Why” Behind Your Preferences

This is the step most people skip, and it’s where a lot of misalignment happens.

Don’t just say what you like. Explain why.

Do you like how quickly it absorbs?
That it doesn’t pill under makeup?
That it feels weightless but still moisturizing?
That it doesn’t irritate sensitive skin?

Two products can feel similar on the surface, but the reason you prefer one over the other is what actually guides a beauty product development chemist.

From Kitchen Concept to Lab-Ready Product

A lot of founders start with DIY versions or rough ideas, and that’s completely fine.

But there’s a gap between something that works in your kitchen and something that can be:

stable
scalable
safe for consumers
consistent across batches

Bringing structured references helps bridge that gap. The quality of your input directly impacts the quality of your formulation.

At this stage, you’re no longer experimenting, you’re developing a regulated product. The FDA’s overview of how cosmetic products are developed outlines the standards and considerations that come into play.”