Is it on the lip border or outside the lips .On the lips the most common cause is Fordyce spots or ectopic sebaceous glands.No treatment required for this condition.
Around the lips 2 possibilities 1) milia which are miniature epidermal cysts which can be removed 2) Molluscum contagiosum which is a poxvirus infection and contagious.Should be treated by curettage or cryo and also can be selflimiting.a photo graph will help in precise diagnosis.
You need to meet the dermatologist to get it removed. Sunblock creams applied regularly by day and differin gel by night can help to a certain extent.
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