[fingeringzw]

DMDM Hydantoin can be a bit tricky to navigate, especially with formaldehyde release concerns. Your calculations are on the right track, as the general rule of thumb is that about 10% of the DMDM Hydantoin can convert to free formaldehyde. So, for example, 2000 ppm would indeed yield approximately 200 ppm of free formaldehyde. However, you’re right to be cautious about going above 2500 ppm, as it can push you into a riskier territory regarding formaldehyde labeling and potential skin irritation. Staying below the 0.05% threshold for free formaldehyde is definitely wise to avoid any labeling issues.

[fingeringzw]

Thanks a lot!