A survey by the UK College of Optometrists reveals the 92 percent of women are putting their health and appearance at risk by using old makeup.

It’s not generally known that makeup has a sell-by date in most advanced countries. For example :

* Mascara has an expiry date of 3–6 months.
* Liquid and cream foundations, concealer, cleanser, moisturiser, 6–8 months.
* Pressed, loose and compressed powders, eye shadow, blusher, lip gloss, lipstick, toner, 1 year.
* Eye and lip liner, 18 months.

The problem is that these products can be a “hot house” for bacteria which can cause infections when the makeup is applied. The bacteria builds up over time until it becomes dangerous to use. Mascara is a particular problem because the stick used to apply it can scratch the soft tissue surrounding the eye.

The worst offenders, says the study, are women in their 30s and early 40s.

Dr Susan Blakeney, optometric adviser to the college, said, “Mascara can be a breeding ground for bacteria, so it’s not surprising we’ve found nearly half of women suffer from itchy, watery and red eyes when they are holding onto their eye makeup for so long and sharing it among their friends.”