Although cosmetics sold here are generally safe, the Health Sciences Authority website has some tips for added precaution:

# Before using a product, test it on a small area of your skin. If there is no reaction after 24 hours, it should be safe to use.

# Monitor changes in the product's colour, odour and texture. Stop using it if there are changes or if you develop an adverse reaction.

# Wash your hands before using your cosmetics so that bacteria is not transferred to your face.

# Do not dilute cosmetics with water when they dry up as moisture will encourage bacteria growth.

# Do not use cosmetics other than for their intended purposes. For example, do not use a lip pencil as an eyeliner as the lip pencil may contain ingredients that can irritate your eyes.

This article was first published in Mind Your Body, The Straits Times.