The company had reportedly attracted both private equity and strategic interest last month after hiring JP Morgan and Goldman Sachs to advise on a sale or IPO earlier this year.
They included CVC Capital Partners and KKR according to a Reuters report at the time, which cited two sources familiar with the matter.
It added that trade buyers LVMH and CVS were also interested, as was an unnamed Asian bidder.
Douglas has now said it is eyeing a capital increase of about €70m through an IPO, and revealed its EBITDA in the first half of its 2014/15 financial year was about €180m.
Advent invested in Douglas in December 2012 and currently holds a 96 per cent stake in the business.
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