ROGER HENDERSON, a GP based in Shropshire, says: COLD sores are painful, fluid-filled blisters that occur on the edge of lips. Try taking an LLysine supplement, an amino acid that can help inhibit the herpes virus infection which causes them. Bruises, meanwhile, happen when an injury causes capillaries to break. If you bruise easily, Solgar Pycnogenol has been shown to improve microcirculation and helps to strengthen blood vessels. Hormonal changes can cause production of sebum, an oily substance. This can cause pores to become clogged or infected. And dead cells can be removed with a cream containing glycolic acid such as Avene Diacnéal to help prevent thickening of the skin and the formation of blackheads. This is a mild, over-thecounter cure. Visit www.solgar.co.uk for more details