Field Notes

The open jar symbol on the packaging is full of science: how preservation tests work, why storage and method of application significantly influence shelf life...

Phase partitioning, emulsifier sequestration, and water activity explain why balm formulas fail challenge tests more frequently than aqueous serums – and what this means for...

Two of the most effective brightening agents address the melanogenesis signaling pathway mechanistically in a complementary way—but their combination often fails in practice due to...

Why hermetically sealed single-dose portions can be more stable for pH-sensitive active ingredients like vitamin C or AHA compounds than conventional serum bottles — and...

Japanese craftsmanship philosophy meets formulation science: Why a precisely stabilized single formula often delivers more active ingredients to the skin than a competing multi-active stack...

D4, D5, and D6 were once considered indispensable building blocks of luxury cosmetics. Since EU restrictions came into force, the industry has faced one of...

How nanoscopic delivery systems can increase retinol bioavailability by up to 35%—and why formulation is more critical than mere concentration.

So-called chrono-peptides synchronize topical active ingredients with the skin's circadian rhythms. What research says about how time-controlled release systems work and what this means for...

Around 200 new skincare products are launched every month in Germany alone. Knowing the crucial quality characteristics allows for informed choices instead of relying on...