Researchers created tiny capsules (microsponges) loaded with rosemary oil that penetrate skin better than plain rosemary oil gel. In testing, this formulation improved hair length, thickness, and root size by 20-50% more than regular rosemary oil, and even outperformed minoxidil (the gold standard for hair growth) by about 50%.

Scientists optimized microsponge formulations in the lab, then tested the best version on skin samples and live subjects to measure hair growth markers like β-catenin levels and physical hair changes.

Funding not disclosed in abstract