This is likely the HT "Resident Evil Afterlife"-Headsculpt of Milla with slightly repainted eyebrows and possibly lightening of the lips. On this headsculpt the upper hairpiece can be exchanged (magnetic) and the backpart is just glued on, so one can remove almost all sculpted hair rendering it easy to modify it with a wig.
Since the HT sculpt is not available anymore, you might consider the VeryCool version "Female shooter" VCF-2021. It's pretty much the same head with weaker paintwork. Possibly you can grab the original or one of its recently surfaced clones on Ebay and modify it to your needs.
https://www.ebay.de/itm/325241634667?hash=item4bb9e97f6b:g:eekAAOSwdV1itUNy&amdata=enc%3AAQAHAAAAsGw2ZdJn7eb3MlnboB5koGlE6VmzvYm6vxOYfXTAnZ4j2dFHgJkVqaWlesgQeF%2FU5FQGVRxHV5m69Ut5xAfxv%2BQrkYw6h1%2BiTNb1u%2FhdaJLRKFnBt%2BnWwC%2BhFTSbSygJUDjyU11q1IttZt%2F%2B61w9HH%2FvGq0mt1kOAA9MNB%2BoFLTyZ5TWS%2BY97MI8Cba1mHBAL%2FY%2FhaItf28BC%2BsHW5y54FbUm%2B6I%2BIgJyPwCtNr6CAQR%7Ctkp%3ABk9SR8De5JiBYQ
Hope this helps.
-Ralf