Kojic acid is a steady compound that’s non-irritating to the pores and skin when used on the proper focus. In accordance with Marcus, that must be proper round 1 %.
Clear beauty chemist and founding father of KKT Consultants Krupa Koestline notes a barely decrease proportion. “Most just lately the EU [European Union] has really helpful a protected restrict of 0.7% for Kojic Acid in topical merchandise,” Koestline mentioned. This comes from the issues surrounding endocrine disruption at a focus above 0.7%, in keeping with the Scientific Committee on Consumer Safety. These are opinions from the SCCS because the research on kojic acid focus are restricted, so hold that in thoughts.
Whereas kojic acid is a typically well-tolerated ingredient, it is nonetheless acid on the finish of the day. “For these with very delicate pores and skin, proceed with warning as kojic acid does have the potential to trigger irritation and dryness, as with every acid,” Marcus mentioned.
Additionally like every acid or exfoliating ingredient, kojic acid shouldn’t be used on damaged or irritated pores and skin. To reiterate: Keep away from use on open wounds, sunburns, rashes, or allergic reactions.
