Medicinal oil: Facing the right hand side of Pioneer Center in Mong Kok, head for New Century Square. That road seems to be called Bi Street. There are several pharmacies on that road, which are cheaper than other pharmacies (including daily necessities).

Skin care products and cosmetics: Sai Yeung Choi South Street in Mong Kok is a golden place to buy audio-visual, electronic and telecommunications products. Many cosmetics (salsa) and fashion shops are stationed in it, displaying fashionable goods, which is dazzling. (MTR Mong Kok Station Exit D3), if you want high-end cosmetics, you can go to the nearby langham place, 1/F to 3/F fashion brands gather, 4/F food court, 5/F to 7/F focus on young clothes, and there are many famous young fashion shops on the 5th to 7th floors ... (MTR Mong Kok Station Exit C).