Dear Doctor,

Is there a relationship between cosmetics and skin cancer? What should I consider when choosing a skin product?

Most cosmetics contain chemicals which may have harmful effects on the body. This is because anything applied over the skin even in small amounts is absorbed in the body. Various studies have linked body care products like lotion, baby oil, lipsticks, and powder to cancer of various parts including skin.

For example Sodium lauryl sulphate present in shampoos, lotions and soap cause irritation, which later manifest informs of dermatitis and skin cancer. Sometimes, the follicles on the skin fall off. Other compounds such as Cocoamide, lauramide and diethanolamine are present in the commonly used body care products. Besides cancer, they predispose users to liver and kidney failure while Propelyne glycol found in many hand and body moisturizers carries similar risk of causing cancer. Phthalates, coal tar, parabens, present in various body care products are equally harmful. Unfortunately bubble baths and baby oils have harmful chemicals too. About 100 cancer causing chemicals have been identified in these products. The saddest bit is that majority of these products do not contain labels stating all the ingredients and their harmful effects although the benefits are visible in bold letters. Even if risk is mentioned, it is in such small letters that one has to strain eyes to read it. Besides, majority of the people do not even care to read the product information like "keep out of reach of children,” not safe for children under 6.” As long as such information appears, individuals should develop suspicion that there is something, which is harmful. Although use of cosmetics has become part of life, excess use can be avoided. In situations where there is a persistent mole or ulcer over the skin, change in skin colour, unexplained weight loss, investigations should be carried out because these could be early warning signs for cancer. Those buying cosmetics should read all the ingredients present on the product and try to avoid those containing carcinogenic chemicals. If possible those containing, natural products like turmeric, basil; aloe vera should be used.

Dr Rachna Pande  is a specialist in internal medicine at Ruhengeri Hospital