Category Product Development and Formulation

Practical guides to briefs, custom formulation, sample rounds, stability testing and scale-up.

Product Development and Formulation

Cosmetic Sample Rounds: How Many Should a Formula Take?

Tyler, founder of jogonglabs, on the production floor

Most custom skincare formulas should plan for two to four sample rounds. The number itself is not the goal. What matters is whether each round answers a clear question and moves the project closer to a formula that can be…

Tyler
October 2, 2026

Product Development and Formulation

Natural Preservatives in Skincare: The Hard Part

Chemist testing a botanical serum formulation for natural preservatives skincare

Botanical formulas fail faster than synthetic ones. Here is why preservation is the hardest part of a clean-beauty brief, and how a 13-year herbal manufacturer handles it.

September 22, 2026