A green universal preservative system, can be claimed as preservative-free system, colorless and odorless, low dosage, high efficacy, mild and easy to formulate.

Does not cause discoloration, avoiding issues caused by hydroxyacetophenone.

Toner, serum, mask: 0.5–0.7%

Emulsion, cream: 0.6–1.3%

The final use level in the formulation should be determined based on the results of a microbial challenge test.

Can be added at any stage of formulation.

Final dosage should be determined by microbial challenge test.

Recommended final pH: 4.0–6.5