When applying medication in the form of ointments, creams, or gels, it is important to use the correct amount. Too much may increase the chance of side effects, whereas too little may not achieve the desired effect. The fingertip unit is a simple measure that can help you to work out how much medication you need to apply over an area of skin.
From the 2010 revision of the Complete Home Medical Guide © Dorling Kindersley Limited.
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