** Shares of Chinese beauty and health product maker Giant Biogene Holding 2367.HK rebounds 5.2% to HK$62.05, on course for the biggest one-day gain since May 13

** Stock hit HKR56.2 in morning session, lowest since February 4, before rebounding

** Company said in a statement during lunch break that its controlling shareholder Juzi Holding intends to raise its shareholding in the company within three to six months for at least HK$200 mln ($25.5 mln)

** Says the move is to demonstrate Juzi's confidence in business development and growth potential of the company

** Hong Kong's healthcare index .HSCIH surges 3.8%%, Hang Seng Index .HSI rises 1.1%

** YTD, stock up 23.2%

($1 = 7.8480 Hong Kong dollars)

(Reporting by Donny Kwok)

((donny.kwok@thomsonreuters.com))