The efficacy of intense pulse light among patients with skin type III-IV in acute facial acne: the Malaysian experience by Ismail, Adibah Hanim, Chin, Shih Choon, Ng, Michael Leong Toong, Kaur, Simerdip, Lakhbir Singh, Sarabdeep Singh, Mogan, Saruveish, Hatah, Ernieda