Modern leather-working companies do not use mercury, arsenic, phenol or formaldehyde.

Today, major leather producers must demonstrate that they comply with all the main regulations on the subject such as
EU-REACH and the ZDHC, which contains a list of prohibited substances called MRSLs.
Source: @leather_naturally
EU-REACH and the ZDHC, which contains a list of prohibited substances called MRSLs.
Source: @leather_naturally